Smith's RV Centre

Problem

Possible Cause

Correction

Unit will not run

No 120-volt AC power
Tripped 120-volt breaker
Defective on/off switch
Loose connector plug
Defective on/off switch

Connect to power source
Reset circuit breaker
Replace switch
Check connection integrity
Replace main switch

Fan runs too slowly

Poor electrical contact
Low line voltage
Undersized power cord
Tight motor shaft
Misaligned blower/fan
Intake filters clogged

Check all connections
Check supply voltage
Replace with proper size
Check shaft
Check alignment
Clean or replace filters

Fan runs but compressor will not engage

Low voltage
Undersized power cord
Starting capacitor
Improper temperature setting
Defective thermostat
Defective time delay
High compressor pressure
Defective compressor

Inspect supply outlet
Replace with correct size
Replace capacitor
Reset thermostat
Replace thermostat
Replace delay switch
Defective time-delay switch
Replace compressor

Compressor will not cycle off

Thermostat set too low
Clogged condenser coils
Excess heat gain
Iced-over evaporator
Stuck thermostat switch
Low refrigerant charge

Set to warmer temperature
Clean condenser
Reduce heat gain areas
Turn system off to melt ice
Replace switch
Recharge unit