Turbo Air TGM-11R Service Manual page 107

ELECTRONIC CONTROLLER INSTRUCTION
No Control Function Control Objects
12 Fuzzy Heater
Deforst Compressor
Evap-Fan Motor
Con-Fan Motor
5-3. Self - Diagnosis table
Code Content Perception Method
F1 F-sensor - Sensor shorted
Malfunction - Sensor disconnected
D1 D-sensor - Sensor shorted
Malfunction - Sensor disconnected
C1 Cycle, Comp. - When the temperature of the
Malfunction D-sensor is over 32˚F
although the compressor has
been running for 30 minutes.
F3 Defrost When the D-sensor temperature
Malfunction doesn't reach 47˚F
within 40 minutes.
5-4. Sensor Description
Sensor
F-sensor -Thermistor(Electrical resistance varies with temperature changing)
-Act like thermostat. Detects air temperature.
D-sensor -Thermistor(Electrical resistance varies with temperature changing)
-Act like thermostat. Detects Evap. coil's temperature.
Contents
The Defrost step will be started at following conditions.
1. The compressor has run for 30 minutes.
2. There is no openning the door for 30 minutes.
3. The temperature of D-sensor is lower than 5˚F.
4. The temperature of F-sensor is higher than D-senser's temperature
by 53.6˚F for 10 minutes.
Freezer operation state
- The compressor runs for 30 minutes and rests for 5 minutes.
- Above action will repeat, until it is repaired.
- Defrost heater will attempt to defrost.
- If F-sensor temp. is higher than 28.4˚F then heater goes off.
- Heater turns on for 20 minutes, if F-sensor is in error mode
too.
- Normal operation.
(Compressor is automatically turned on and off by F-sensor.)
- Defrost heater will be come on for 40 minutes
every time setted.
- If the D-sensor's temp. reach 47˚F within 40 minutes, D-
heater will be turned off immediately.
Operation
104
Remark
Description Remarks
- Wire color is orange.
- Wire color is blue.