Sanyo SPW-D253GH56 Service Manual page 68

Possible causes of troubles
Indoor thermistor is either
open or short.
Outdoor thermistor is either
open or short.
• Non volatile memory IC (EEPROM) is abnormal (Indoor control panel)
Protective device for
compressor is activated.
O: flashes
: OFF
4
Indoor coil temp. (E1 = TH2) cannot be detected.
Indoor coil temp. (E2 = TH3) cannot be detected.
Indoor room temperature cannot be detected.
Discharge gas temp.A (PC compressor=TH0A) cannot be detected.
Outdoor coil liquid temp. (C1 = TH0E) cannot be detected.
Outdoor coil gas temp. (C2 = TH0C) cannot be detected.
Scroll protection thermostat
PC compressor motor is overloaded.
PC compressor motor is locked.
Compressor current detection circuit is defective.
Scroll proteiton thermostat
No detection of scroll protection thermostat
Low-pressure switch
Power supply voltage between phases is unbalanced.
Standard comp. contactor (Mg SW)is chattering.
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4. Service procedures
Wired remote Wireless remote
controller controller
display display
Operation lamp
F01
and heat stand-by
F02
lamp flash
F10 alternately.
O: Operation
F04
lamp
F06
O: Timer lamp
F07
:Heat stand-
by lamp
F09
F29
H01
:Operation
H02
lamp
H03
O: Timer lamp
H04
:Heat stand-
by lamp
H05
H06
H17
H18
SM830036