Sanyo CLM2472 Service Manual - Page 52

Trouble Diagnosis by Error Monitor Lamps

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8-2. Trouble Diagnosis by Error Monitor Lamps To prevent electric shock, do not inspect or repair until WARNING the Power Lamp on the P.C.Board is turned off. 8-2-1. Location of the Error Monitor Lamps Remove the top plate of outdoor unit and the cover of Electrical Component Box. The Power Lamp and Error Monitor Lamps are located on the P.C.Board of Electrical Component Box. (Fig.1) Heat Exchanger Rear side P.C.Board of Electrical Component Box. Error Monitor Lamps Power Lamp ERR0 ERR1 ERR2 ERR3 Front side Fig.1 View from top 8-2-2. Display of the Error Monitor Lamps If a protective device has activated or there is a sensor failure in the outdoor unit, the 4 error monitor lamps on the outdoor control circuit board will indicate the nature of the trouble. : ON : OFF Error Monitor Lamp ERR0 ERR1 ERR2 ERR3 Error Contents Sensor for compressor discharge temp Sensor for heat excharge temp Sensor for branch pipe A (Narrow tube) Sensor for branch pipe B (Narrow tube) Sensor for branch pipe C (Narrow tube) Sensor for branch pipe D (Narrow tube) Outdoor temp sensor Sensor for branch pipe A (Wide tube) Sensor for branch pipe B (Wide tube) Sensor for branch pipe C (Wide tube) Sensor for branch pipe D (Wide tube) HIC circuit trouble (current, temp) Actuation of comp over load relay Actuation of freeze protection function Outdoor unit error. Detail of error message indicate on indoor LED 52

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8-2.
Trouble Diagnosis by Error Monitor Lamps
WARNING
To prevent electric shock, do not inspect or repair until
the Power Lamp on the P.C.Board is turned off.
8-2-1.
Location of the Error Monitor Lamps
Remove the top plate of outdoor unit and the cover of Electrical Component Box.
The Power Lamp and Error Monitor Lamps are located on the P.C.Board of Electrical Component Box. (Fig.1)
8-2-2.
Display of the Error Monitor Lamps
If a protective device has activated or there is a sensor failure in the outdoor unit, the 4 error monitor lamps on the
outdoor control circuit board will indicate the nature of the trouble.
Heat Exchanger
Rear side
P.C.Board of Electrical Component Box.
Error Monitor Lamps
Front side
Fig.1 View from top
ERR0
ERR1
ERR2
ERR3
Power Lamp
Error Monitor Lamp
Error Contents
ERR0
ERR1
ERR2
ERR3
Sensor for compressor discharge temp
Sensor for heat excharge temp
Sensor for branch pipe A (Narrow tube)
Sensor for branch pipe B (Narrow tube)
Sensor for branch pipe C (Narrow tube)
Sensor for branch pipe D (Narrow tube)
Sensor for branch pipe A (Wide tube)
Sensor for branch pipe B (Wide tube)
Sensor for branch pipe C (Wide tube)
Sensor for branch pipe D (Wide tube)
HIC circuit trouble (current, temp)
Actuation of comp over load relay
Actuation of freeze protection function
Outdoor unit error. Detail of error message indicate on indoor LED
Outdoor temp sensor
: ON
: OFF
52