Turbo Air TGM-69R Service Manual page 96

ELECTRONIC CONTROLLER INSTRUCTION
No Control Function Control Objects
12 Fuzzy
Deforst
5-3. Self - Diagnosis table
Code Content
F1 F-sensor
Malfunction
D1 D-sensor
Malfunction
C1 Cycle, Comp. - When the temperature of the
Malfunction
F3 Defrost
Malfunction
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.
Heater
The Defrost step will be started at following conditions.
Compressor
1. The compressor has run for 30 minutes.
Evap-Fan Motor
2. There is no openning the door for 30 minutes.
Con-Fan Motor 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.
Perception Method
- Sensor shorted
- Sensor disconnected
- Sensor shorted
- Sensor disconnected
D-sensor is over 32˚F
although the compressor has
been running for 30 minutes.
When the D-sensor temperature
doesn't reach 47˚F
within 40 minutes.
Operation
Contents
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.
- Wire color is orange.
- Wire color is blue.
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Description Remarks
Remark