Seivice diagnosis
Domestic air conditioner
11 Service Diagnosis
11.1 Caution for Diagnosis
The operation lamp flashes when any of the following errors is detected.
1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions,
disabling equipment operation.
2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the
diagnostic procedure described in the following pages.
11.2 Parameter of primary electronic appliance
11.3 Problem Symptoms and Measures
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None of the units
operates
Check the power supply.
Check to make sure that the rated voltage is supplied.
Check the indoor PCB
Check to make sure that the indoor PCB is broken
Operation
sometimes stops.
Check the power supply.
A power failure of 2 to 10 cycles can stop air conditioner
operation.
Equipment
operates but
does not cool, or
does not heat
(only for heat
pump)
Check for faulty operation
of the electronic
expansion valve.
Set the units to cooling operation, and compare the
temperatures of the liquid side connection pipes of the
connection section among rooms to check the opening and
closing operation of the electronic expansion valves of the
individual units.
Diagnosis by service port
pressure and operating
current.
Check for insufficient gas.
Large operating
noise and
vibrations
Check the installation
condition.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.) are
provided.
N O
N a m e
P a ra m e te r
P ic tu re
1
F a n m o to r
R a te d v o lta g e :2 2 0 -2 3 0 V
R a te d c u rre n t:0 .2 A
R a te d fre q u e n c y:5 0 /6 0 H z
34
Summary of Contents for AS12GB3HRA
Page 12: ... Piping diagrams Domestic air conditioner 5ˊPinping diagrams 10 ...
Page 58: ... Circuit diagrams Domestic air conditioner ...
Page 60: ...Removal of procedure 1 Removal of Air Filter 1 Domestic Air Condition ...
Page 63: ...Removal of procedure three two HOOKS 4 Domestic Air Condition ...
Page 65: ...Removal of procedure 4 Removal of Drain pan 6 Domestic Air Condition ...
Page 66: ...Removal of procedure 5 Removal of vertical blades and swing motor 7 Domestic Air Condition ...
Page 67: ...Removal of procedure 6 Removal of Electrical Box 8 Domestic Air Condition ...
Page 68: ...Removal of procedure 7 Removal of Heat Exchanger 9 Domestic Air Condition ...
Page 69: ...Removal of procedure 10 Domestic Air Condition ...
Page 70: ...Removal of procedure 8 Removal of Fan Rotor and Motor 11 Domestic Air Condition ...
Page 71: ...Removal of procedure 12 Domestic Air Condition ...