Smith's RV Centre

Problem

Possible Cause

Correction

Insufficient cooling

Wrong thermostat setting

Restricted air circulation over
cooling unit
Refrigerator not level
Air Leakage into cabinet

Heavy coating of frost on
evaporator
Faulty heater, wrong voltage or
type
Intermittent power

Voltage drop
Break in electrical circuit

Faulty thermostat
Failed cooling unit

Adjust thermostat to higher
setting
Remove any restrictions

Adjust RV to level refrigerator
Check door gasket; adjust or
replace if necessary
Defrost unit frequently

Install new heater of appropriate
voltage
Check for loose connections;
repair as necessary
Maintain voltage at full rate
Check fuses, switch wiring;
repair as necessary
Replace thermostat
Replace cooling unit

Excessive cooling

Wrong thermostat setting
Incorrectly located end of
thermostat capillary tube

Faulty thermostat
Improperly wired heater

Adjust thermostat to lower setting
Reinsert capillary end of
thermostat fully into the sleeve
under the ice-tray compartment
Replace thermostat
Rewire heater according to unit
wiring diagram