Service manual

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2 SAFETY PRECAUTION
1-1. INDOOR UNIT
Model name Service Ref.
Service
Manual No.
PLA-A18/30/36BA4 PLA-A18/30/36BA4
PKA-A18HA4 PKA-A18HA4
OCH482/OCB482
OCH483/OCB483
PCA-A30/36KA4 PCA-A30/36KA4 OCH484/OCB484
PEA-A18AA4
PEAD-A30/36AA4
PEA-A18AA4.TH
PEAD-A30/36AA4
HWE08070
HWE09050
PKA-A30/36KA4 PKA-A30/36KA4.TH OCH488/OCB488
1
REFERENCE MANUAL
Before obtaining access to terminal, all supply circuits must be disconnected.
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off the power-supply beaker.
• Discharge the condenser before the work involving the electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be done without turning off the power,
exercise great caution not to touch the live parts.
2-1. ALWAYS OBSERVE FOR SAFETY