Turbo-air TGM-14RV User Manual Page 105

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102
ELECTRONIC CONTROLLER INSTRUCTION
No Control Function Control Objects Contents Remark
3 Turbo Compressor
Freeze
Evap-Fan Motor
Con-Fan Motor
LED
4 Determination
Of
Defrost
5 Defrost Heater
Function Compressor
Evap-Fan Motor
Con-Fan Motor
6. If you press the Turbo Freeze button during the defrost mode,
display panel displays Turbo Freeze mode but actually The Turbo
Freeze mode will start after defrost mode is completed.
7. If defrost mode occurs during the Turbo Freeze mode, the defrost
mode will start after the Turbo Freeze mode is completed
1. Defrost mode is controlled by a time interval setting.
2. The time interval setting can be set by shifting dip s/w on the PCB
board.
3. The time interval setting is as follows.
Dip Switch
NO.1 NO.2 Cycle time(hours)
00 12
10 10
01 8
11 6
4. Factory setting is to defrost every 8 hours ( see the above picture.)
5. The first defrost mode will start at half of time interval setting of when
unit was plugged-in.
1. Defrost step
Pre-cool Heater Pause Fan Delay
Comp. on off off on
F-fan motor
on off off off
C-fan motor
on off off on
Heater off on off off
Max time 30 min. 40 min. 3 min. 5 min.
If D-sensor temperature If D-sensor
is over 50˚F, heater temp. lower
goes off. than 14˚F,
If D-sensor is in error, then F-fan
heater goes off turns on
automatically 40 min immediately
after activated.
A. Pre-Cool Step
a. It prevents from extreme temperature rise during defrost mode.
b. Comp. Con-Fan Motor and Evap-Fan Motor run continuously
during pre-cool step.
c. 88 LED indicates inside temperature.
d. If F-sensor is sensing lower temperature than (-22)˚F(-30˚C) or
pre-cool step interval reach in 30 minutes, pre-cool step goes off.
e. Turbo Freeze mode is only one time prior to pre-cool step.
B. Heater defrost step
a. The defrost heater is energized.
b. 88 LED displays 'dF'
c. The defrost heater warms the evaporator coil thereby melting all
frost that accumulated during the previous refrigeration cycle.
e. When D-sensor is higher than 47˚F(8˚C), heater goes off.
TEMPERATURE
TURBO FREEZE
Turbo air
Long Beach, CA
LAMP POWER
T.F. FA N DOOR
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