Avantco 178GDICE49FB Service Manual - Page 7
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Part Testing
Controller Testing
1.
Check for 120 volts between black (L) and white (N)
wires, main power.
2. Check for 120 volts between red (compressor) and
white (L) wires, compressor ON only.
3. Check for 120 volts between gray (defrost) and
white (L) wires, defrost mode only.
4. Check for 120 volts between yellow (fan) and white
(L) wires, fan ON only.
Evaporator Fan Motor Testing
1.
Ensure controller is calling for evaporator fan to run
(Fig. 3) then:
2. Check for 120 volts between yellow (fan) and white
(L) wires, fan ON only. (Fig. 4)
3. Check for 0.3 amps+/- 10% at yellow wire at rear of
controller. (Fig. 4)
4. If tests above fail, replace fan motor.
Condenser Fan Motor Testing
1.
Ensure controller is calling for compressor to run
(Fig. 6) then:
2. Check for 120 volts at fan plug between the blue
and brown wires.
3. Check for 0.4 amps +/- 10% on blue wire.
(Fig. 7)
4. If tests above fail, replace fan motor.
Service Manual
Ice Merchandisers
Fig. 2
Fig. 3
Fig. 4
Fig. 6
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Fig. 5
Fig. 7
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