Mitsubishi P500YMF-C- Manuals

–6– [3] Brazing No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit. Example : Inner state of brazed section When non-oxide brazing was not used When non-oxide brazing was used Items ...

–7– [4] Airtightness Test No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C leakage. Halide torch R22 leakage detector Items to be strictly observed : 1. Pressurize the equipment with nitrogen up to the design pressure and then judge the eq...

–9– • PURY-P400·500YMF-C 2 2 2 2 2 COMPONENT OF EQUIPMENT [1] Appearance of Components Outdoor unit Propeller fan Heat exchanger(front) Compressor Propeller fan Fan motor Fan motor Heat exchanger(rear) SV block 1 SV block 2 4–way valve 4–way valve CS circuit Drier CV block 1 CV block 2 Control box C...

–10– Controller Box RELAY board FANCON board (for MF3) INV board MAIN board Choke coil (L2) Inteligent PowerModule (IPM) G/A board Y-C board SNB board Diode stack (DS) Magnetic contactor (52C2) Magnetic contactor (52C1) Magnetic contactor (52F) Overload relay (51C2) FANCON board (for MF2) Capacitor ...

–11– MAIN board • PUHY / PURY CN51Indication distance 3 - 4 Compressor ON/OFF 3 - 5 Trouble CNRS3Serial transmission toINV board CN3D SW1 CNTR CNFC1 CNVCC4Power sourcefor control(5V) CN20Power supply 3 L1 1 N SW3 SW4 SW2 SWU2 SWU1 CNS1 CNS2 CN40 CNVCC3Power Sourcefor control 1 - 2 30V 1 - 3 30V 4 - ...

–12– INV board CNDR2Out put toG/A board CNTH CN15V2Power supplyfor IPM control CNACCT CNAC2Powersource 1 L2 3 N 5 G CN52CControl for52C CNFANControlfor MF1 CNR CNRS2Serial transmissionto MAIN board SW1 CNVDC 1 - 4 DC-560V CNVCC4Power supply (5V) CNL2Choke coil CNVCC2Power supply 1 - 2 30V, 1 - 3 30V...

–13– CNFAN CNPOW CNFC2 CN15V1 CNDR1 CNIPM1 CNE CNDC1 FANCON board G/A board

–15– BC controller CNTR CN02M-NETtransmission CN03 CN12Powersupply 1 EARTH 3 N 5 L SW4 SW2 SW1 SW5

–17– [2] Refrigerant Circuit Diagram and Thermal Sensor PURY-P400, 500YMF-C : Solenoid valve: Orifice: Capillary: Check valve : Thermal sensor: Strainer SP : Service port ACC : Accumulator CV3b BV1 BV2 ST1 TH5 CV2b ST15 TH7 TH6 CJ2 MA SA CJ3 CJ1 63HS 63H1 O/S 63H2 SLEV Comp2 Comp1 CV1b CV1a SV32 SV2...

–21– CMB-P108 ·1010V -F A 5 1 2 3 4 4 1 2 3 1 2 3 1 2 3 SVM1 SVM2 13 14 15 9 10 11 12 5 6 7 8 4 4 5 6 87 9 12 11 10 15 14 13 16 16 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 SV7B SV8B SV9B SV10B SV7A SV8A SV9A SV10A SV7C SV8C SV9C SV10C SV1B SV1A SV1C 1 5 6 7 8 9 10 11 12 13 14 ...

–24– 27.0/19 27.0/19 35.0/24.0 35.0/24.0 5 5 5 5 5 5 55 55 27.1 29.2 27.6/26.2/25.2 34.6/32.8/31.7 2000 300 2000 350 200 344 100 100 100 50 50 125 125 125 100 25 10 10 10 10 10 10 10 10 10 10 Hi Hi Hi Hi Hi Hi Hi Hi Hi Hi 360 360 360 340 340 410 410 410 360 280 Discharge (TH11/TH12) Heat exchanger o...

–25– 20.0/- 20.0/- 7.0/6.0 7.0/6.0 5 5 5 5 5 5 55 55 27.1 29.2 25.6/24.3/23.4 32.1/30.5/29.4 60 1400 60 1600 122 Discharge (TH11/TH12) Heat exchanger inlet (TH5) Inlet Accumulator Outlet Suction (Comp) (No.1/No.2) Low pressure saturationtemperature (TH2) Upper (TH4) Liquid level Lower (TH3) Shell bo...

–29– 3 3 3 3 3 TEST RUN [1] Before Test Run (1) Check points before test run 1 Neither refrigerant leak nor loose power source/ transmission lines should be found. 2 Confirm that the resistance between the power source terminal block and the ground exceeds 2M Ω by measur- ing it with a DC 500 V megg...

–30– (3) Check points for test run when mounting options (4) Attention for mounting drain water lifting-up mechanism Built-in optional parts Content of test run Check point Result Mounting of drainwater lifting-upmechanism Mounting of perme-able film humidifier Release connector of pump circuit,chec...

–31– (5) Check points for system structure In the case of the PURY-P400·500 YMF-C Check points from installation work to test run. Classification Portion Check item Trouble Installationand piping Power sourcewiring 1 2 3 4 5 6 7 8 9 1 2 3 4 Instruction for selecting combination of outdoor unit, andi...

–34– 4 GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET REMOTE CONTROLLER (1) Switch function • The switch operation to register with the remote controller is shown below: Registration/ordinary modeselector switch Registration/ordinarymode selection switch Switch to assign indoorunit address Registr...

–35– (2) Attribute display of unit • At the group registration and the confirmation/deletion of registration/connection information, the type (attribute) of the unit is displayed with two English characters. Display Type (Attribute) of unit/controller Indoor unit connectable to remote controller Out...

–38– 3) Method of deletion • Deletion of group registration information of indoor unit ...................................... 4 [Operation procedure] 1 With the remote controller under stopping or at the display of “HO”, continuously press the FILTER + switch ( A + B ) at the same time for 2 seconds...

–40– 5 5 5 5 5 CONTROL [1] Control of Outdoor Unit [1]- 1 PURY-P400·500 YMF-C (1) Initial processing • When turning on power source, initial processing of microcomputer is given top priority. • During initial processing, control processing corresponding to operation signal is suspended. The control ...

–41– • The operating temperature is 124 ° C (No. 1 compressor) or 115 ° C (No. 2 compressor). 4) Compressor frequency control 1 Ordinary controlThe ordinary control is performed after the following times have passed.• 30 seconds after the start of the compressor or 30 seconds after the completion of...

–43– (5) Oil return control (Electronic expansion valve (SLEV)) • The amount of opening of the oil-return LEV (SLEV) is determined as follows: in cooling, by the operating capacity of the No. 1 compressor and the ambient temperature; in heating, by the operating capacity of the No. 1 compressor. • I...

–44– 5) Change in number of operating indoor units while defrosting • If the number of indoor units changes while the outdoor unit is defrosting, the defrosting operation continues. Once defrosting has ended, control for changing the number of units is performed. • If the indoor unit is stopped whil...

–45– TH9 Four-way valve Compressor Accumulator CS circuit Separ ate compressor TH2 LPS Heat exchanger Outdoor heat e xchanger Indoor heat e xchanger Flo w control valv e Operation mode Full cooling Cooling mainly Full heating Heating mainly Defrosting ONON OFFOFFOFFOFF ONON OFFOFFOFFOFFOFF ONONONON ...

–46– (11) Control at initial starting • When the ambient temperature is low (5 ° C or less in cooling and – 5 ° C or less in heating), initial starting will be performed if the unit is started within 4 hours of the power being turned on. • The following initial start mode will be performed when the ...

–48– (12) Emergency response operating mode The emergency operation mode is a mode in which the unit is run in an emergency to respond to the trouble when the compressors (No. 1, No. 2) break down, making it possible to carry out a abnormality reset using the remote control. 1) Starting the Emergenc...

–50– YES NO YES NO YES YES NO NO Normal operations Trouble observed Stop Start Breaker turned on Set indoor ad- dress No. to remote controller Operationcommand Operation mode Error mode Cooling-only, Heating-only,Cooling/heating mixed Error stop Operation mode Operation mode 52C ON [3] Operation Flo...

–51– (2) BC controller Note : 1 Two error modes include indoor unit side trouble, BC controller trouble, and outdoor unit side trouble. In the case of indoorunit side trouble, error stop is observed in the concerned indoor unit only, and in the cases of BC controller and outdoor unitside troubles, e...

–52– (3) Indoor unit YES NO YES NO YES NO YES NO YES NO YES NO YES NO YES NO Normal operations Trouble observed Stop Start Breaker turned on Operation SW turned on 1. Protection function self-holding cancelled. 2. Indoor unit LEV fully closed. Remove controllerdisplay extinguished 3-minute drain pup...

–55– YES NO YES YES NO (6) Dry operation Normal operations Thermostat ON Stop 1. Indoor unit fan stop2. Inverter output 0Hz3. Indoor unit LEV, oil return LEV closed 4. Solenoid valve OFF5. Outdoor unit fan stop6. BC controller solenoid valve OFF7. BC controller LEV fully closed 1. Outdoor unit (Comp...

–60– 1 2 3 4 5 During cooling operations, required refrigerant amount tends to increase (refrigerant in accumulator decreases)in proportion to increase in the number of operating indoor units. However, the change of increase rate is small. During heating operations, liquid level of accumulator is th...

–61– 3) Check the refrigerant volume by LED monitor display using the LED. Set the LED monitor display switch (SW1) as shown below and check the past information (history) concerning the refrigerant volume. Set SW1 as shown in he figure at right. If LD3 lights up, it indicates the refrigerant charge...

–62– TH1 SC11 SC16 Pd (High pressure) [3] Refrigerant Volume Adjustment Mode Operation (1) Procedure Depending on the operating conditions, it may be necessary either to charge with supplementary refrigerant, or to drain out some, but if such a case arises, please follow the procedure given below. S...

–63– (2) Refrigerant adjustment in Cooling season (Flow chart) In case of PURY-P400, 500YMF-C YES NO Adjustment starts. Start cooling operation of all indoorunits in a test run mode. Note 1 Has the compressor been operated for more than 30min? Was the operationcondition stabilized? The high pressure...

–64– (3) Refrigerant adjustment in heating season (Flow chart) In case of PURY-P400, 500YMF-C Start Adjustment Has the operating condition stabilized? Is the accumulator's liquid level AL = 0? Did the liquid level change from AL = 0 to AL = 1? Did the liquid level change from AL = 1 to AL = 0? Did t...

–65– Note: 1 If there are any units which are not operating, it will cause refrigerant to accumulate, so by all means operate all the indoor units. Also, in order to prevent stable operation from being disrupted by the thermostat going OFF, set the trial operation mode. Note: 2 If the high pressure ...

–66– 7 7 7 7 7 TROUBLESHOOTING [1] Principal Parts Pressure Sensor (1) Judging Failure 1) Check for failure by comparing the sensing pressure according to the high pressure/low pressure pressure sensor and the pressure gauge pressure. Turn on switches 1, 3, 5, 6 (High) and 2, 4, 5, 6 (Low) of the di...

–67– Solenoid Valve (SV1~8) Check if the control board’s output signals and the operation of the solenoid valves match. Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be output to the LED’s. Each LED shows whether the relays for the followi...

–68– * Closed torque : 13kg·m (1.3N·m) The refrigerant flow is as following figure. Hot gas (high pressured) flows in cooling mode and cool gas/liquid (low pressured) flows in heating mode. Please refer to the Refrigerant Circuit Diagram. And, ON/OFF of Solenoid valve is depends on the amount of run...

–69– Solenoid Valves Block2 1 3 2 4 CV5b CV7b SV7 SV8 Solenoid ValvesBlock 2 CV4b CV6b CV2b ST1 BV1 BV2 CV3b 1 2 3 4

–70– Check Valves Block1 The refrigerant flow in the pipe 6 , 7 , 8 and 9 are depend on ON/OFF of the SV3, 4, 5 and 6. Please confirm by LED monitor display. You can open the cap of valve A, B and C, but 3 types of hexagon socket screw keys. The size is as follows. * Closed torque : A : 1.7kg·m (0.1...

–72– Outdoor LEV The valve percentage opening changes in proportion to the number of pulses. (Connections between the outdoor unit’s MAIN board and SLEV, (PURY-P400·500YMF-C)) Output (phase) Output states Output pulses change in the following orders when the Valve is Closed 1 → 2 → 3 → 4 → 5 → 6 → 7...

–73– 1 Disconnect the control board connector and connectthe check LED as shown in the figure below. When the base power supply is turned on, the indoor LEVoutputs pulse signals for 10 seconds, the outdoor LEVoutputs pulse signals for 17 seconds, and BC controlleroutputs pulse signals for 10-20 seco...

–75– Intelligent Power Module (IPM) Measure resistances between each terminal of IPM with tester, and use the results for troubleshooting. Specified resistance value is dependent on tester type to be used for resistance measurement, because diode inside IPM has non-linearity, thus difference of impe...

–76– (2) Trouble and remedy of remote controller (In the case of MA remote controller) Phenomena Factors Check method and handling 1 2 If pushing the remotecontrol operation SWdoes not make asound such as feepwith the crystaldisplay lamp out, andno operate ispossible. (An appropriatedisplay on there...

–83– (3) Investigation of transmission wave shape/noise Control is performed by exchanging signals between outdoor unit, indoor unit and remote controller by M-NET transmission. If noise should enter into the transmission line, the normal transmission will be hindered causing erroneous operation. 1)...

–85– 4) Treatment of Inverter and Compressor Troubles If the compressor does not work when error codes 4240, 4250, 4340 or 4350 are detected, determine the point of malfunction by following the steps in the LED monitor display and countermeasures depending on the check code displayed, then perform t...

–88– 7) Individual Parts Failure Judgment Methods. Part Name Judgment Method Diode Stack (DS) Refer to “Judging Diode Stack Failure.” Intelligent Power Module(IPM) Refer to “Judging IPM Failure.” Electromagnetic Contactor (52C) Measure the resistance value at each terminal. Rush Current Protection R...

–89– Motor (Compressor) G/A board Red U V W N P White Black Black Capacitor (C2,C3) Red IPM

–90– (4) Troubleshooting the major components of the BC controller 1) Pressure sensor Pressure sensor troubleshooting flow Check on the LED monitor dis-play. • TH2 or LPS of outdoor unit.• HPS of outdoor unit• PS1, PS3 of BC controller and confirm the following relationshipHPS > PS1 PS3 > TH2 ...

–93– Touch the probes of the tester or other instrumentto the shaded areas to measure. Thermistor R o =15 k Ω Rt=15exp 3460 ( – ) 1 ON 2 3 4 5 6 7 8 9 10 1 ON 2 3 4 5 6 7 8 9 10 1 ON 2 3 4 5 6 7 8 9 10 1 ON 2 3 4 5 6 7 8 9 10 Note 1 : • Board connector CN10 corresponds to TH11 through TH14, while co...

–94– No cooling No heating Check disconnection or loosenessof connectors. Is there a problem? Operate in cooling or heating (1 systemonly when there are plural systems) Cooling or heating operation? Heating operation Note 1 Check if LEV 1 are fully open LEV 1 fully open? LEV3 are not controlled Chec...

–95– 1 LEV Note 1 : • Symptoms of incorrect connection to BC controller LEV board Improper installation is the same for 1 and 2 , so it is omitted here. Note 2 : Method for checking LEV full open, full closed condition 1 Check LEV full opening (pulse) using the LED monitor display (outdoor controlle...

–97– 2 Solenoid Valve Change thesolenoid valve. Change the controlboard. 220-240V output? With the solenoid valve con-nector is disconnected from theboard, use remote controller toturn on the unit and check theoutput (220-240V) from thecontroller board. Conductance present? Disconnect solenoid valve...

–99– [2] BC Controller Disassembly Procedure (1) Service panel Be careful on removing heavy parts. Procedure Illustrations 1. Remove the two screws securing the electric panel box. Loosen the two screws securing the electric panel box, and then remove the box. 2. Remove the four screws securing the ...

–100– (3) Thermistor (Liquid and gas piping temperature detection) Be careful when removing heavy parts. Procedure Photos 1. Remove the front panel 1 Use the procedure under (1)-1.2.3 to check TH11, TH12, TH15, and TH16. 2. Disconnect the piping sensor lead from the control- ler panel. 1 TH11 - TH12...

–101– (5) LEV Be careful on removing heavy parts. Procedure Photos 1. Remove the service panel. See (1)-1.2.3 2. Replace the applicable LEV. Important! 1 When performing the above procedure, be sure to allow for enough service space in the ceiling area for welding. 2 When conditions require, the uni...

–104– Checking code Meaning, detecting method Cause Checking method & Countermeasure Serialtransmissionabnormality 0403 If serial transmission cannot beestablished between the MAIN andINV boards. 1) Wiring is defective. 2) Switches are set wrong on the INV board. 3) A fuse (F01) on the INV board...

–106– Checking code Meaning, detecting method Cause Checking method & Countermeasure Lowpressuresaturationtempera-turesensorabnormal-ity (TH2) Liquidleveldetectingtempera-turesensorabnormal-ity (TH4) Liquidleveldetectingtempera-turesensorabnormal-ity (TH3) 1111 1112 1113 1. When saturation tempe...

–108– Checking code Meaning, detecting method Cause Checking method & Countermeasure 1302 1368 1370 Liquidside Intermedi-ate side High pressure abnoramlity (BC controller) High pressureabnoramlity 2(Outdoor unit) When press. sensor detects 1kg/cm 2 G (0.098MPa) or less just be- fore starting of ...

–116– Checking code Meaning, detecting method Cause Checking method & Countermeasure 5201 5201 5203 5301 Pressuresensorabnormality(outdoor unit) IAC sensor/circuitabnormality Pressure sensor abnormality (BC controller) Highpressureside Intermedi-ate 1 When pressue sensor detects1kg/cm 2 G (0.098...

–122– Checking code 6607 (continued) Meaning, detecting method Systemcompo- sition Generating unit address Display of trouble Detecting method Cause Checking method & countermeasure No ACK error When no ACK signal is detected in 6 continuous times with 30 secondinterval by transmission side cont...

–124– Checking code 6607 (continued) Meaning, detecting method Systemcompo- sition Generating unit address Display of trouble Detecting method Cause Checking method & countermeasure No ACK error When no ACK signal is detected in 6 continuous times with 30 secondinterval by transmission side cont...

–125– 1) Total capacity of indoor units in the same refrigerant system exceedsthe following: 2) Erroneous setting of OC model se- lector switch (SW3-10). 1) The Indoor unit model name (model code) connected is not connectable.Connectable range.....20~250 2) Erroneous setting of the switch (SW2) for ...

–126– Checking code 7102 7105 7107 7111 7130 Meaning, detecting method Cause Checking method & Countermeasure Connected unit count over Address setting error• Erroneous setting of OC unitaddress • Erroneous setting of BC con-troller address Trouble source :Outdoor unitBC controller Branch No. se...

–141– 8 PREPARATION, REPAIRS AND REFRIGERANT REFILLING WHEN REPAIRING LEAKS [1] Location of leaks: Extension piping or indoor units (when cooling) (Pump down operation) 1 Attach a pressure gage to the low-pressure servicing check joint (CJ2). 2 Stop all of the indoor units. When the compressor has s...

–143– [4] Location of leaks: Outdoor unit (when heating) 1 Remove any refrigerant from the entire system (outdoor unit, extension piping and indoor units). Reclaim the refrigerant; do not discharge it into the air. 2 Repair the leaks. 3 After the leaks are repaired, replace the dryer with a new one ...

–144– YES YES YES YES YES NO NO NO NO NO Start Test run all indoor units. Is the refrigerant composition of α OC correct? (Note 2) Finished checking the composition. Check TH2, TH9, LPS and the CScircuit block and correct any malfunc-tions. (Note 3) Is the refrigerant composi- tion of α OC correct? ...

AIR CONDITIONERS CITY MULTI Models PURY-P400, P500YMF-C Service Handbook Service Handbook PURY-P400, P500YMF-C HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100-0005 TELEX J24532 CABLE MELCO TOKYO New publication effective Aug 2002 Specifications subject to change without notice. Service Handb...