Mitsubishi Electric PLA-A42BA1 - Manual
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Table of Contents:
- Page 3 – SAFETY PRECAUTION; Cautions for units utilising refrigerant R410A; Use new refrigerant pipes.
- Page 4 – When charging directly from cylinder
- Page 5 – PART NAMES AND FUNCTIONS
- Page 6 – °F°C; Display Section; Wired
- Page 8 – SPECIFICATIONS
- Page 10 – NOISE CRITERION CURVES
- Page 11 – UNIT
- Page 12 – OUTLINES AND DIMENSIONS; Floor; Detail drawing of fresh air intake hole
- Page 13 – WIRING DIAGRAM; Be sure to turn off the power source
- Page 15 – Heat exchanger; REFRIGERANT SYSTEM DIAGRAM
- Page 16 – TROUBLESHOOTING
- Page 17 – To be continued to the next page.; Malfunction-diagnosis method at maintenance service>; • The check mode is cancelled.
- Page 24 – 0-4. TROUBLESHOOTING BY INFERIOR PHENOMENA; Phenomena
- Page 26 – When the remote controller cannot be used
- Page 27 – NOTE
- Page 28 – Thermistor R; Wiring contact check; Temperature
- Page 29 – Indoor controller board; and; : Voltage between pins of; : Voltage between pins of C955
- Page 30 – MODELS; 0-8. FUNCTIONS OF DIP SWITCH AND JUMPER WIRE
- Page 31 – SPECIAL FUNCTION; Operation pattern; Main unit; System constraint
- Page 32 – NOTICE
- Page 33 – (2) Setting method of each function by wired remote controller; Outline of functions
- Page 34 – DISASSEMBLY PROCEDURE; OPERATING PROCEDURE; Removing the air intake grille; (1) Slide the knob of air intake grille toward the arrow; Removing the electrical box; Photo 1
- Page 35 – Removing the panel; Detail
- Page 36 – Photo 8; Removing the heat exchanger
SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
3 3 2 2 3
CONTENTS
1. TECHNICAL CHANGES .......................... 2
2. REFERENCE MANUAL........................... 2
3. SAFETY PRECAUTION........................ 3
4. PART NAMES AND FUNCTIONS ........ 5
5. SPECIFICATIONS ................................. 8
6. NOISE CRITERION CURVES............. 10
7. OUTLINES AND DIMENSIONS ............12
8. WIRING DIAGRAM ................................ 13
9. REFRIGERANT SYSTEM DIAGRAM ...... 15
10. TROUBLESHOOTING ........................ 16
11. SPECIAL FUNCTION.......................... 31
12. DISASSEMBLY PROCEDURE ........... 34
NOTE:
• This manual describes only
service data of the indoor units.
• RoHS compliant products have
<G> mark on the spec name
plate.
PARTS CATALOG (OCB420)
WIRED REMOTE
CONTROLLER
WIRELESS REMOTE
CONTROLLER
ON/OFF
TEMP
ON/OFF
TEMP.
INDOOR UNIT
Model name
indication
No. OCH420
REVISED EDITION-A
October 2007
PLA-A12BA PLA-A12BA
1
PLA-A18BA PLA-A18BA
1
PLA-A24BA PLA-A24BA
1
PLA-A30BA PLA-A30BA
1
PLA-A36BA PLA-A36BA
1
PLA-A42BA PLA-A42BA
1
PLA-A12BA
PLA-A18BA
PLA-A24BA
PLA-A30BA
PLA-A36BA
PLA-A42BA
Revision:
• PLA-A12/18/24/30/36/42BA
1
are added in REVISED
EDITION-A.
• Some descriptions have been
modified.
•
Please void OCH420.
Indoor unit
[Model names]
[Service Ref.]
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Summary
3 SAFETY PRECAUTION 3 Cautions for units utilising refrigerant R410A 3-2. CAUTIONS RELATED TO NEW REFRIGERANT Use new refrigerant pipes. Make sure that the inside and outside of refrige-rant piping is clean and it has no contaminationsuch as sulfur hazardous for use, oxides, dirt, shaving particles,...
4 Gravimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. Tool name Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications. (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·Only for R410A ·U...
5 4 PART NAMES AND FUNCTIONS Drain pipe Filter Vane Gas pipe Liquid pipe Air outlet i-see sensor (option) Air intake(Intake grille)
