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Trouble-Shooting
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Refrigerators & Freezers • Trouble-Shooting
A. Appliance Does Not Operate
Check that:
1. The thermostat is not set to “STOP” or “OFF”.
2. The electrical system circuit-breaker for the appliance is “ON”.
3. The fuse between the electronic control unit and the power source has not blown.
4. The power supply cable is not faulty, loose or poorly connected.
5. The battery is delivering sufficient power. If the battery voltage is less than 10.4V (on a
12VDC system) or 22.8V (on a 24VDC system), the unit will not operate.
6. The voltage on the electronic control unit terminal board corresponds to that of the
battery. If there is a voltage drop of over 0.2-0.4V check that:
a. The size of the cable connecting the battery to the electronic control unit corre-
sponds to specifications (see ABYC Guidelines).
b. All connection points in the power supply are properly tightened.
c. There are no signs of oxidation on the battery poles and contact points.
7. If an AC/DC converter is being used, check that:
a: The AC power source is “ON”.
b. The circuit board terminals are properly connected.
c. Output voltage to the appliance is sufficient.
B. Excessive Appliance Noise
Check that:
1. The appliance and refrigerating unit are positioned on flat surfaces.
2. The appliance is not touching other objects that may cause vibration.
3. The refrigerant lines at the back of the unit (if applicable) are not touching or vibrating
against the appliance.