Sanyo CG1411 Service Manual page 59

12-3-2. Thermistor Abnormality (Indoor Unit Only)
Check open / short circuit at the coil thermistor and room thermistor (between 1 and 2 of the lamp 8P) on the
PCB of the indoor unit (but only when the room temperature is 14 to 113°F).
12-3-3. Protective Circuit of Outdoor (Burner) Unit Operated
Check the following according to the failure display. Check items listed in 12-6. Heating Operation Not Possible.
No. Caused by (outdoor unit)
— Normal
— Defective in IC chip (E
— Defective Gas Valves
A Detective Thermistor 1
B Detective Thermistor 2
C Limit switch
D Flame current circuit
E Lighting failure
F Lost flame
G Incorrect combustion motor speed
H Over-time period in retry
I Over number of times in retry
J Bypass Valve (V2) not open
— Reversing Valve not working
Note: Refer to 12-8. Failure Display on Outdoor Unit and Correction Method.
12-3-4. CT Detection (Refer to 12-3-9 and 12-3-10.)
(1) Compressor abnormality
(2) Compressor over-load relay engaged
light off
light on
LED lamps
2 3 4 5
2
PROM)
Normal operation
Cannot read IC chip data or missing IC chip on outside
PCB
Detects abnormality in Gas Valve Circuit at initial
checking
Open or Short of Thermistor 1
Open or Short of Thermistor 2
Thermal fuse or Bimetal Thermostat tripped
Defective abnormal in Flame Current Circuit
Couldn't establish flame
Flame Sensor Circuit detects lost flame and could not
establish the flame
Incorrect combustion motor speed
Thermistor 1 or Thermistor 2 temperature did not go
down in set period
Combustion stopped by Thermistor 1 or Thermistor 2
more than set number
Bypass Valve failure or drop-out of Thermistor 2
Reversing Valve failure, drop-out of Thermistor 2, or
shortage of refrigerant
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Meaning