Page 2 - Please Read Before Starting; accidental injury or death.; SPECIAL PRECAUTIONS; WARNING; Ground the unit; CAUTION
Please Read Before Starting This air conditioning system meets strict safety and operat-ing standards. As the installer or service person, it is animportant part of your job to install or service the system so it operates safely and efficiently. Carefully read this instruction booklet before beginni...
Page 3 - Check of Density Limit; ii
Check of Density Limit The room in which the air conditioner is to beinstalled requires a design that in the event of refrig-erant gas leaking out, its density will not exceed a setlimit. The refrigerant (R410A), which is used in the aircondition-er, is safe, without the toxicity or combustibility o...
Page 4 - CONTENTS
— CONTENTS — Section 1: CONTROL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 -2 2. Selecting Outdoor Unit f...
Page 5 - iv
Section 5: TROUBLE DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 1. Contents of Remote Controller Switch Alarm Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 -2 2. Outdoor Unit Control Panel LED Display . . . . . . . . . . . . ...
Page 6 - Control Functions; Contents; Controls
1 1 - 1 W-2WAY ECO-i SYSTEM Control Functions Contents 1. CONTROL FUNCTIONS 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 -2 2. Selecting Outdoor Unit for Operation . . . . . . . . . . . . . . . . . . . . . . ....
Page 7 - Required settings for Test Run
1 Outdoor unit No.1 1 11 1 1 11 1 At time of shipment At time of shipment System address No. of indoor units No. of outdoor units Unit No. On-site setting On-site setting Not necessary Not necessaryNot necessary The W-2WAY ECO-i is a system that allows multiple outdoor units to be connected. The out...
Page 8 - (1) Delayed start of outdoor units in the same system; The units do not start simultaneously; Simultaneous stop of multiple outdoor units; Selecting an Outdoor Unit for Operation
1 (2) Delayed start for each system * For information concerning EEPROM settings, refer to the field application functions. (1) (2) Stopping individual outdoor units The last unit to stop operating is the outdoor unit that contains the inverter compressor with the shortestamount of operating time . ...
Page 9 - -1. Compressors Mounted in the Outdoor Units; Capacity; Examples of accumulated operating time: ODU=Outdoor Unit; Compressor Control
1 3-1. Compressors Mounted in the Outdoor Units Constant speed 5 hp ––– Scroll 72 96 DC Inverter DC Inverter Capacity Rotary hp = horsepower * Immediately after installation, all compressors have an operating time of zero. In this case, the compressors start in the following sequence: Inverter compr...
Page 10 - -4. Inverter Compressor Capacity Control; This control is performed every 15 seconds.
1 (1) (2) The inverter frequency during operation may be lower than the frequency listed above due to overload current protection control. * If Quiet mode is selected, the inverter may stabilize at a frequency lower than those stated above. For information about Quiet mode, refer to the field applic...
Page 12 - Discharge Temperature Protection
1 PX=125.6 °F PX –0.1 Thermostat OFF Horsepower increase prohibited Horsepower increase permitted Horsepower increase permitted Maximum requirement level [L] * Depending on the maximum requirement level of the indoor unit, the judgment temperatures for each area may vary as shown in the figure (exam...
Page 14 - -2. System Refrigerant Oil Recovery Control
1 (2) Heating control when outdoor unit heat exchanger is acting as an evaporator * When the above operation is finished, normal operation starts at the horsepower determined by the indoor units where thermostats are ON. Control time 1.2.3. (1) Cooling control when the outdoor unit heat exchanger is...
Page 15 - System employs
1 (1) (2) (3) (1) (2) (3) Control time 4-2-3. Refrigerant Oil Recovery Control between Systems Simplified flow of system refrigerant oil recovery control Refrigerant oil recovery control between systems shall be performed as the flow mentioned below. Cooling cycle 4-3-1. Defrost Methods Maximum 3 mi...
Page 19 - Meaning; Operation when oil level is not 2.
1 (1) 30 seconds after the oil level changes from 2 to 1, the recovery valves turn ON.However, if the oil level becomes 2, this control is stopped. * If the low oil level continues, that outdoor unit (oil-receiving outdoor unit) receives a supply of oil from operating outdoor units where the oil lev...
Page 20 - This valve is OFF when the outdoor unit is stopped.; Operation of Solenoid Valves
1 (1) (2) (3) (4) Control during normal operation (A) Cooling operation (B) Mixed cooling/heating operation The main purpose of this valve is to detect the flow of refrigerant (refrigerant volume) on the indoor-unit side whenthe outdoor unit heat exchanger is functioning as an evaporator. When the v...
Page 22 - -1. Types of Electronic Thermostatic Expansion Valves; Outdoor Unit Electronic Thermostatic Expansion Valves
1 Front Heatexchanger 1 72 96 7-1. Types of Electronic Thermostatic Expansion Valves [CHDX07263, CHDX09663] Capacity Electroniccontrol valve Electroniccontrol valve 1Electroniccontrol valve 2 Electroniccontrol valve 4 Heat exchanger 1 valve Heat exchanger 2 valve For SC circuit Heat exchanger 1 valv...
Page 23 - (2) Operation when discharge temperature is high
1 ) 7-4. SC Circuit Electronic Control Valve [MOV4] (1) SC Control (Cooling Mode only During cooling operation, the liquid refrigerant which condenses at the outdoor unit heat exchanger flows intothe receiver tank, and SC (sub-cool = supercooling) approaches 0°F. When SC is small and the length of t...
Page 24 - -4. Operation after Fixed Initial Fan Mode; high, and is decreased when the pressure sensor temperature is low.; (1) When all indoor units are operating in cooling mode; -6. When the Compressor Magnet Switch Seizing Alarm Occurs; Outdoor Fan Control
1 8-1. Fan mode * 8-3. Fixed Initial Fan Mode For the first 30 seconds after operation starts, the mode is fixed at the initial mode which was calculated from therelationship between the outdoor air temperature and the outdoor unit horsepower. If the outdoor unit horsepower changes dramatically, say...
Page 26 - Indoor Unit Control of the Electronic Control Valve
1 20 20 – 20 20 – – 10-1. Normal Control (1) Cooling operation Position of electronic control valve Stopped Fan Thermostat OFF Thermostat ON Cooling Outdoor unit operating Outdoor unit stopped Performs SH control in the range of 55 – 480pulses. * The SH target value is controlled so that the E3 - E1...
Page 28 - Gas tube valve; Rap Valve Kit Control
1 Electronic thermostatic expansion valve Gas tube valve ON ON ON 20 pulses20 pulses 20 pulses A gas tube valve kit may be connected to the Type D indoor unit. When the gas tube valve kit is connected, operations of gas tube valve kit and indoor unit electronic thermostatic expansion valve are as sh...
Page 29 - This control is carried out regularly in cooling mode only.; Indoor Unit Refrigerant Oil Self Recovery Control
1 (1) (2) This control is carried out regularly in cooling mode only. During stopped, fan or thermostat OFF condition, indoor unit expansion valve is opened regularly for 1 to 2 min-utes regularly (at an interval of once every 2 hours.) During the thermostat ON, the indoor unit electronic thermostat...
Page 30 - (1) Discharge temperature protection alarm; Discharge temperature protection list; (2) Discharge sensor trouble detection control; Discharge sensor failure list; Compressor 1; Discharge Temperature
1 <Alarm Information> (1) Discharge temperature protection alarm This device sets an upper limit discharge temperature of 222°F for all compressors. When the discharge tem-perature reaches 222°F, that compressor is stopped and restarted. If the same high discharge condition occurs4 times, then...
Page 31 - An alarm occurs when overcurrent or lock current is detected.; Current Protection
1 Occurs when an open CT circuit is detected in the invertercompressor. 96 Occurs during ordinary operation when overcurrent (27 A) is detected. (1) Fan motor (2) Inverter compressor (4) CT circuit detection trouble List of Alarms (3) Constant-speed compressor List of overcurrent and lock currents A...
Page 32 - High-pressure sensor failure; Pressure Sensor Failure
1 (1) (2) High-pressure sensor failure This system contains 2 types of pressure sensors: a high-pressure sensor and a low-pressure sensor. Alarms are emitted when the high-pressure sensor becomes an electrical open-circuit or a short-circuit condi-tions, and a broken wiring, short-circuit or poor co...
Page 33 - Backup Operation; (1) Alarms that result in automatic backup operation
1 <Caution> (A) Reduce the number of outdoor units set at outdoor unit No.1 by the number of failed outdoor units. (B) At the S010 switch on the PCB of the failed outdoor unit, turn ON the switch for the compressor to dis able, and turn ON the “backup” switch. <Field Application Functions&g...
Page 35 - This setting controls the operation of the drain pump.; Service Maintenance Functions
1 17-2. Anti-slime countermeasures ... EEPROM setting 0C (set only on the main unit) This setting controls the operation of the drain pump. 17-3. Delayed Start for Each System: Outdoor EEPROM 3E (set only on outdoor unit No. 1) The operation start time can be delayed according to the set system addr...
Page 37 - Setting
1 18-1. Snowfall Sensor Functions: Outdoor EEPROM 04 * If the snowfall sensor is used, then depending on the circumstances it is necessary to make the correct setting at all outdoor units in the system. * If “control is not performed” is set, control by the above signal is ignored. This setting is u...
Page 38 - Automatic cancel; • Symptoms of insufficient gas; (3) Outdoor unit PCB LED indications in judgment mode
1 When judgment mode is not engaged, the LED indicates the normal display (OFF), or else indicates alarms orother information. [1] Judgment mode is canceled automatically when 4 hours have passed after it was started. [2] Forced cancel Short-circuit the CHECK pin while the judgment mode display is a...
Page 39 - – MEMO –
Page 40 - Outdoor Unit Repair Procedures; OUTDOOR UNIT REPAIR PROCEDURES; Panels
2 2 - 1 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures Contents 2. OUTDOOR UNIT REPAIR PROCEDURES 1. Removing Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -2 2. Removing Electrical Component Box and Duct . . . . . . . . . ...
Page 42 - Removing Electrical Component Box and Duct; (1) Remove the electrical component box cover
2 2 - 3 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 2. Removing Electrical Component Box and Duct (1) Remove the electrical component box cover (remove 6 screws). (Fig. 3) • When closing the cover after the repair work, set the upper fringe of the cover should cometo align inside the electric...
Page 44 - Discharging Compressor Oil; The low-pressure outlet port is at the Lo side of the right side.; Acceptance/rejection criteria for the oil
2 2 - 5 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 3. Discharging Compressor Oil Discharged oil can be used for checking the condition of the system. Based on the appearance and color of thedischarged oil, a judgment can be made on whether the system is operating normally or not. 3-1. Discha...
Page 45 - Switch on outdoor unit control PCB
2 2 - 6 4. Backup Operation W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures This system includes an emergency automatic backup function that allows the A/C to operate during the periodafter trouble occurs until repairs are made. However, during repair and at other times, use manual backup opera-t...
Page 47 - Backup operation settings for each compressor; INV compressor
2 2 - 8 4. Backup Operation W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 4-2-2. Backup operation by setting the failed compressor not to operate Backup operation settings for each compressor INV compressor AC1 compressor Setting for backup operation OK Failed DIP switch S010: Turn BACK UP and ...
Page 48 - Recovering Refrigerant; The following equipment and tools are required:; the jumper wire. Then restore electrical power to the outdoor unit.
2 2 - 9 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 5. Recovering Refrigerant The following equipment and tools are required: Jumper wire with clips, adjustable wrench, set of manifold gauge valves specially designed for refrigerant R410Aonly, vacuum pump, refrigerant recovery unit, pre-purge...
Page 50 - If it is in heating, follow the step and later procedures.; NOTE
2 2 - 11 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 5. Recovering Refrigerant (2) If the remote controller (RCS-TM80BG) is not available for maintenance of the outdoor unit Determine the outdoor unit where the unit No. setting (S007) (3P DIP switch) (Blue) on the outdoor unit control PCB is ...
Page 51 - Repeat steps and and complete pump down for all outdoor units.; N O T E
2 2 - 12 5. Recovering Refrigerant W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 5-2-3. Refrigerant recovery procedures (2): Indoor unit with no ball valve equipped Refrigerant in all indoor units and the refrigerant tubing circuit must be pumped into the outdoor unit. The maximumrefrigerant st...
Page 52 - -3. Recovery of Refrigerant from Entire System; to the outdoor units.
2 2 - 13 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 5. Recovering Refrigerant 5-3. Recovery of Refrigerant from Entire System (1) Turn off power to the entire outdoor system. (2) Short-circuit the AP (Air Purge) pins (CN102) on the outdoor control PCB of all outdoor units, then supply power ...
Page 53 - Checking for Leakage After Repair; -1. Pressure Check for Leakage of Outdoor Unit; are any leaks, bubbles will show on the tubing surface.
2 2 - 14 6. Checking for Leakage After Repair W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 6-1. Pressure Check for Leakage of Outdoor Unit After completing repair of the outdoor unit, carry out the following leakage check. (1) Check that all service valves for gas tubes, liquid tube, and balan...
Page 55 - Charging Compressor Oil; -1. If Refrigerant Has Already Been Charged to Outdoor Unit; The oil charging procedures are given below.
2 2 - 16 8. Charging Compressor Oil W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 8-1. If Refrigerant Has Already Been Charged to Outdoor Unit Be sure to use an exclusive oil-charging tank for charging compressor oil. Prior to charging, carry out vacuum drying inside the tank and take care that...
Page 56 - (3) Charging compressor oil into outdoor unit
2 2 - 17 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 8. Charging Compressor Oil (2) Charging compressor oil into oil-charging tank Connect a piece of pipe to the lower valve and then insert the other end deeply into the bottom of the oil con-tainer. Make sure you avoid letting any air be suck...
Page 57 - -2. If Outdoor Unit Has Not Been Charged with Refrigerant; into the oil container.
2 2 - 18 8. Charging Compressor Oil W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures Next follow the instructions in “5-2-1. Cooling operation (for all units)” at the outdoor unit where oil will be charged,and start cooling operation at all units. When the operating conditions have stabilized, per...
Page 58 - Remaining oil in the removed compressor: 0.58 gal; Model name
2 2 - 19 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 8. Charging Compressor Oil 8-3. Charging Additional Compressor Oil (after replacing compressor) The rated amount of oil is pre-charged in the compressors as given below: When replacing a faulty compressor, be sure to first measure the amoun...
Page 59 - Pumping Out Refrigerant from Outdoor Unit; Required equipment and tools:
2 2 - 20 9. Pumping Out Refrigerant from Outdoor Unit W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures Required equipment and tools: This work is performed in order to collect the refrigerant from an outdoor unit where repairs (other than compressorreplacement) will be performed into other outdoor...
Page 60 - the outdoor unit power.
2 2 - 21 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 9. Pumping Out Refrigerant from Outdoor Unit (8) Short-circuit the vacuum application pin on the outdoor unit control PCB of the unit to be repaired. Then turn ON the outdoor unit power. When the vacuum application pin is short-circuited an...
Page 61 - Faulty outdoor unit
2 2 - 22 9. Pumping Out Refrigerant from Outdoor Unit W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures (9) Close the gas tube and balance tube on the outdoor unit to be repaired. Then slowly close the liquid tube ser- vice valve. * When the low pressure at the outdoor unit to be repaired reaches 7...
Page 62 - 0-1. Compressor Trouble Diagnosis and Check Methods; Reference: Symptoms of motor burning
2 2 - 23 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10. Compressor 10-1. Compressor Trouble Diagnosis and Check Methods Generally, compressor failures can be classified into the following categories. (1) Mechanical trouble (A) Locking (intrusion of foreign objects, galling, etc.) (B) Pressur...
Page 63 - pressor Oil,” and charge with oil if necessary.
2 2 - 24 10. Compressor W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10-2. Replacing the Compressor(s) 10-2-1. Replacing only the failed compressor (1) If backup operation is required, follow the instructions in “4. Backup Operation” and engage backup operation. (2) Follow the instructions in ...
Page 64 - At this time, be careful that air does not enter the tubing.
2 2 - 25 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10. Compressor 10-2-2. Replacing all compressors in a failed unit (1) Follow the instructions in “3. Discharging Compressor Oil” and drain the oil from the oil separator in the failed unit. Measure the amount of drained oil. (2) If backup o...
Page 65 - door units. Measure the amount of drained oil.; Remove the manifold gauge.
2 2 - 26 10. Compressor W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10-2-3. Replacing all compressors in a system (1) Follow the instructions in “3. Discharging Compressor Oil” and drain the oil from the oil separators in all out- door units. Measure the amount of drained oil. (2) Follow the ...
Page 66 - (A) If a ball valve is installed on the outdoor unit; * Color sample sheet for degree of stain
2 2 - 27 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10. Compressor 10-2-4. Dry core cleaning If burning or other failures occur repeatedly at compressors within the same system, in many cases the cause is acid, sludge, carbon, or other substances that remain in the refrigeration cycle as the...
Page 67 - (B) If a ball valve is not installed on the outdoor unit; Cleaning dry core; on the previous page.
2 2 - 28 10. Compressor W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures (16) After evacuating all nitrogen gas from the tubing, apply vacuum to all outdoor units where dry cores were removed until the pressure is –14.7 psig (5 Torr) or less. (17) INSTALLATION: Refer to the “Information for the Pe...
Page 68 - Removal; 0-3. Removing and Installing Compressors; * For all types 90 and 140, follow the replacement procedure below.
2 2 - 29 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10. Compressor Removal (1) Connect a manifold gauge to the high- and low-pressure outlet ports at the outdoor unit where the compressor will be replaced. Connect the manifold gauge to a nitrogen cylinder and perform nitrogen gas replacement...
Page 69 - Installation; Install the crankcase heater onto the new compressor.; Shape the tubes and insert them at the 2 brazing locations.
2 2 - 30 10. Compressor W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) CAUTION CAUTION Fig. 23 Crankcaseheater Cushioning rubber(Inner 1 leg) Cushioning rubber(Temporary fastening bolts - 2 inner legs) Front view Fig. 24 Installation Remove...
Page 70 - (7) Disconnect the 3 brazed locations shown in the figure 25.; (Compressor 2 on remote controller alarm display); Remove the crankcase heater.
2 2 - 31 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10. Compressor Removal (1) (2) Follow the instructions in “1. Removing Panels” and “2. Removing Electrical Component Box and Duct” and remove the corresponding parts from the outdoor unit where the compressor will be replaced. (3) (4) (5) (...
Page 71 - Set up the leg of the new compressor onto the 2 cushion rubbers.; Remove the 2 brazed tube caps (2 pieces) from the compressor.
2 2 - 32 10. Compressor W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures (1) (2) * (3) (4) (5) Temporary mount 2 cushion rubbers with bolts at the position as shown in the figure 27. Set up the leg of the new compressor onto the 2 cushion rubbers. Fig. 26 O-ring Fixing nutat the main unit side Fig...
Page 72 - Perform copper brazing at the 3 brazing locations.
2 2 - 33 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 10. Compressor (6) (7) (8) (9) (10) (12) (13) Follow the instructions in “7. Evacuating System” and apply vacuum to the outdoor unit where the compres- sor was replaced. CAUTION CAUTION Fig. 28 Cushioningrubber guide Brazinglocations (3) Fr...
Page 74 - High and Low Pressure Sensors; 1-1. Removing the High and Low Pressure Sensor; the outdoor unit employs a Schrader-type valve.; 1-2. Installing the High and Low Pressure Sensors
2 2 - 35 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 11. High and Low Pressure Sensors (1) (2) (3) (1) CAUTION Fig. 29 High pressuresensor The outdoor unit connection ports for the high and low pressure sensors employ Schrader-type push-to-release valves. Therefore it is not necessary to reco...
Page 75 - Protect the check valves as shown in the figure 30.; the Installation Instruc-; that came with the outdoor unit and the refrigerant recovery unit.
2 2 - 36 12. Replacing 4-way Valve W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures (1) (2) (3) Connect the manifold gauge to the high and low-pressure outlet ports at the outdoor unit where the 4-way valve will be replaced. Connect the manifold gauge to a nitrogen cylinder and perform nitrogen ga...
Page 76 - Protect the check valves as shown in the figure 31.
2 2 - 37 W-2WAY ECO-i SYSTEM Outdoor Unit Repair Procedures 12. Replacing 4-way Valve (1) (2) (3) (4) CAUTION Brazed parts(4 locations) Fig. 31 12-2. When the replacement is not available from the right side of the unit Follow the instructions of “10. Compressor” and remove the constant-speed compre...
Page 78 - Outdoor Unit Maintenance Remote Controller; OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER; Operations
3 3 - 1 W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller Contents 3. OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER 1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -2 2. Functions . . . . . . . . . . ...
Page 79 - About the outdoor unit maintenance remote controller; to the outdoor unit PCB.; System diagram
3 3 - 2 1. Overview W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER (RCS-TM80BG) for W-2WAY ECO-i N About the outdoor unit maintenance remote controller The outdoor unit utilizes nonvolatile memory (EEPROM) on its PCB. This allows EEPROM data...
Page 80 - Functions on the ordinary display
3 3 - 3 W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller 2. Functions N Functions on the ordinary display (1) Functions: Button operations can be used to perform the following functions. • Start/stop of all indoor units • Switching between cooling and heating • Test run of all indoor u...
Page 81 - Ordinary Display Controls and Functions; The connection is shown in the figure below.
3 3 - 4 3. Ordinary Display Controls and Functions W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller N Functions on the ordinary display • Connect the special service checker wiring to the outdoor unit PCB. The connection is shown in the figure below. L If the communications line in the...
Page 82 - LED
3 3 - 5 W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller 3. Ordinary Display Controls and Functions Fig. 1 L All units start/stop (Fig. 1) <Operation> The (ON/OFF operation) button can be used to start and stop all the indoor units. • The LED illuminates if any indoor units is op...
Page 83 - Use the temperature setting; Item code
3 3 - 6 3. Ordinary Display Controls and Functions W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller N Display (functions) • Use the temperature setting and buttons to change the item code. Item code Item Remarks Outdoor unit alarm Alarm code display No. of connected indoor units Qu...
Page 85 - Display of unit Nos. 1 − 20
3 3 - 8 3. Ordinary Display Controls and Functions W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller N Concerning the 7-segment, 4-digit display remote controller timer display The unit Nos. of connected units are indicated by four 7-segment digits ( ) and a colon. 1 2 7 12 17 3 13 18 8...
Page 86 - Monitoring Operations
3 3 - 9 W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller 4. Monitoring Operations Display the indoor unit and outdoor unit sensor temperatures. <Operating procedure> Press and hold the (CHECK) button and buttons simultaneously for 4 seconds or longer to engage temperature monit...
Page 88 - Outdoor Unit Alarm History Monitor
3 3 - 11 W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller 5. Outdoor Unit Alarm History Monitor • Displays outdoor unit alarms only. • Check the indoor unit alarm histories separately using the indoor unit remote controllers or other control device. <Operating procedure> Press ...
Page 89 - Setting mode 1
3 3 - 12 6. Mode Settings W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller N Setting mode 1 <Operating procedure> Press and hold the (CHECK) button and (VENTILATION) button simultaneously for 4 seconds or longer. Press the temperature setting and buttons to change the item co...
Page 90 - Setting mode 2
3 3 - 13 W-2WAY ECO-i SYSTEM Outdoor Unit Maintenance Remote Controller 6. Mode Settings N Setting mode 2 <Operating procedure> Press and hold the (CHECK) button, button, and button simultaneously for 4 seconds or longer. Press the temperature setting and buttons to change the item code. T...
Page 92 - Remote Controller Functions; REMOTE CONTROLLER FUNCTIONS
4 4 - 1 W-2WAY ECO-i SYSTEM Remote Controller Functions Contents 4. REMOTE CONTROLLER FUNCTIONS 1. Simple Settings Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 -2 2. Detailed Settings Function . . . . . . . . . . . . . . . . . . . . . . ....
Page 93 - Simple Settings Function
4 4 - 2 1. Simple Settings Function W-2WAY ECO-i SYSTEM Remote Controller Functions This allows the filter lifetime, operating mode priority change, central control address, and other settings to be made for an individual or group-control indoor unit to which the remote controller used for simple se...
Page 94 - List of Simple Setting Items
4 4 - 3 W-2WAY ECO-i SYSTEM Remote Controller Functions 1. Simple Settings Function List of Simple Setting Items Item code Item Setting data No. Description Filter sign ON time (fitlter life time) 0000 Not displayed 0001 150 hours 0002 2,500 hours 0003 5,000 hours 0004 10,000 hours 0005 Use the filter...
Page 95 - Detailed Settings Function
4 4 - 4 2. Detailed Settings Function W-2WAY ECO-i SYSTEM Remote Controller Functions This allows the system address, indoor unit address, and other settings to be made for the individual or group-control indoor unit to which the remote controller used for detailed settings is connected. When detail...
Page 96 - List of Detailed Setting Items
4 4 - 5 W-2WAY ECO-i SYSTEM Remote Controller Functions 2. Detailed Settings Function List of Detailed Setting Items Item code Item Setting data No. Description No. Description No. Description 0000 Semi-Concealed (A) 0001 4-Way Air Discharge (Mini) Semi-Concealed (X, XM) 0005 0006 Concealed-Duct Hig...
Page 100 - Simple setting items; Filter sign ON times for each model
4 4 - 9 W-2WAY ECO-i SYSTEM Remote Controller Functions 2. Detailed Settings Function Simple setting items Item code Item Description 01 Filter sign ON time setting (filter lifetime) Changes the indoor unit filter lifetime when a high-performance filter or other optional product is installed. 02 Degree...
Page 101 - Enabled only in 2WAY MULTI heat-pump models.; Set mode at priority remote controller; Cooling or dry
4 4 - 10 2. Detailed Settings Function W-2WAY ECO-i SYSTEM Remote Controller Functions Item code Item Description 03 Central control address Set when using a central control device. Used when setting the central control address manually from the remote controller. 04 Operating mode priority change N...
Page 106 - Remote Controller Servicing Functions; List of Servicing Functions; Functions
4 4 - 15 W-2WAY ECO-i SYSTEM Remote Controller Functions 3. Remote Controller Servicing Functions The remote controller includes a number of servicing functions. Use these as needed for test runs and inspections. List of Servicing Functions Functions Description Button operation Reset operation Unit...
Page 107 - Test Run Function
4 4 - 16 3. Remote Controller Servicing Functions W-2WAY ECO-i SYSTEM Remote Controller Functions Test Run Function Operates the unit with the thermostat forced ON. <Procedure> Press and hold the button for 4 seconds or longer. “Test” appears on the remote controller LCD display (Fig. 3). ...
Page 108 - Sensor Temperature Display Function
4 4 - 17 W-2WAY ECO-i SYSTEM Remote Controller Functions 3. Remote Controller Servicing Functions N Sensor Temperature Display Function (displayed regardless of whether unit is operating or stopped) The procedure below displays the sensor temperatures from the remote controller, indoor unit, and out...
Page 110 - Trouble Diagnosis; TROUBLE DIAGNOSIS; Pin
5 5 - 1 W-2WAY ECO-i SYSTEM Trouble Diagnosis Contents 5. TROUBLE DIAGNOSIS 1. Contents of Remote Controller Switch Alarm Display . . . . . . . . . . . . . . . . . . . . . . . . . 5 -2 2. Outdoor Unit Control Panel LED Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5...
Page 111 - Contents of Remote Controller Switch Alarm Display
5 5 - 2 1. Contents of Remote Controller Switch Alarm Display W-2WAY ECO-i SYSTEM Trouble Diagnosis ON: Blinking: OFF: Possible cause of malfunction Wired remote control display Wireless remote controller receiver display Operation Timer Standb y for heating Serial communication errors Mis-setting R...
Page 113 - Outdoor Unit Control Panel LED Display; Display meaning
5 5 - 4 2. Outdoor Unit Control Panel LED Display W-2WAY ECO-i SYSTEM Trouble Diagnosis ( : ON : Blinking : OFF) LED (RED) Display meaning 1 2 After the power is turned ON (and automatic address setting is not in progress), no communication with the indoor units in that system is possible. (Both ON)...
Page 114 - Sensor temperature display function (displayed
5 5 - 5 W-2WAY ECO-i SYSTEM Trouble Diagnosis 3. Remote Controller Servicing Functions Sensor temperature display function (displayed both when unit is running and stopped) Use the following check procedure to display the sensor temperatures from the remote controller, indoor unit, and outdoor unit ...
Page 115 - Sensor Temperature Relationship Table
5 5 - 6 3. Remote Controller Servicing Functions W-2WAY ECO-i SYSTEM Trouble Diagnosis Sensor Temperature Relationship Table Location where sensor is installed Sensor address Sensor type Sensor address Sensor type Indoor unit Remote controller temperature Discharge temperature sensor Indoor unit int...
Page 116 - With type 72, the INV compressor is compressor 1.; Alarm code
5 5 - 7 W-2WAY ECO-i SYSTEM Trouble Diagnosis 4. W-2WAY ECO-i Alarm Codes With type 96, the INV compressor is compressor 1, and the constant-speed compressor is compressor 2. With type 72, the INV compressor is compressor 1. Alarm code Alarm meaning Page E06 Outdoor unit failed to receive serial com...
Page 136 - Blinking Inspection Display on the Remote Controller
5 5 - 27 W-2WAY ECO-i SYSTEM Trouble Diagnosis 5. Blinking Inspection Display on the Remote Controller Blinking inspection display (2) (compressor magnet SW seizing detection) Alarm code (Blinking inspection display) Alarm meaning Compressor magnet SW seizing detectedStatus: Although an outdoor unit...
Page 137 - Inspection of Parts; or
5 5 - 28 6. Inspection of Parts W-2WAY ECO-i SYSTEM Trouble Diagnosis (1) High-pressure switch (63PH1, 63PH2) • 63PH1: Disconnect the CN042 connector (3P, WHT) from the outdoor unit control panel. Measure the resis- tance between socket pins 1 and 3. The resistance is OK if the result is 0 Ω . • 63P...
Page 138 - Output
5 5 - 29 W-2WAY ECO-i SYSTEM Trouble Diagnosis 7. Test Pin When the test pin on the outdoor unit control PCB is short-circuited, each part can be operated individually. • After turning OFF the main unit power, short circuit the test pin (CN022, WHT), then turn the power back ON. Output is performed ...
Page 139 - Thermister Characteristics Curve; Temperature sensor
5 5 - 30 8. Thermister Characteristics Curve W-2WAY ECO-i SYSTEM Trouble Diagnosis 8-1. Room temp.sensor 8-2. Indoor heat exch. coil sensor (E1, E3) 40 35 30 25 20 15 10 5 0 -20 -15 -10 -5 0 5 10 15 20 8 7 6 5 4 3 2 1 0 20 30 40 50 60 Indoor Heat Exchanger temperature sensor[E1, E3] 10 15 20 25 30 3...
Page 140 - Heat exchanger temperature, Heat exchanger temperature sensor
5 5 - 31 W-2WAY ECO-i SYSTEM Trouble Diagnosis 8. Thermister Characteristics Curve 8-4. Compressor discharge gas temp. sensor 8-3. Outdoor temp. sensor, Compressor suction gas temp. sensor Outdoor heat exch. coil sensor (C1, C2) 40 35 30 25 20 15 10 5 0 -20 -15 -10 -5 0 5 10 15 20 Outdoor temperatur...
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