Trouble Diagnosis Of Each Part - Sanyo CMH1972A Technical & Service Manual

8-4. Trouble Diagnosis of Each Part

8-4-1. Problems of Each Part and Inspection Points
For details about the inspection points, refer to the Inspection Points for Each Part.
Problems
Inspection
points
Self-Diagnostics check
Indoor controller
(control unit)
Indoor fan motor
Room temperature
sensor
Heat exchanger
temperature sensor
Inter-unit cable
Switch circuit board
Outdoor control circuit
board
Diode module
HIC
Electrolytic capacitor
Fuse
Compressor
Compressor protective
sensor
Outdoor fan motor
4-way valve
Coil thermistor
Electric expansion valve
Branch tubing
temperature sensor
Indoor unit Outdoor unit
74
Others
No. of
Inspection
Points for
Each part
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)