Cadet RCP402S Owner's Manual - page 5
Troubleshooting Chart
Symptom Problem Solution
MAINTAINING YOUR HEATER
WARNING: Any other service not detailed in this Owner’s Guide should be performed by an
authorized service representative.
*CONSULT LOCAL ELECTRICAL CODES TO DETERMINE WHAT WORK MUST BE PERFORMED BY QUALIFIED
ELECTRICAL SERVICE PERSONNEL.
Maintenance As Needed, or every six months minimum.
1. Allow the heater to cool, then disconnect the power cord from
power supply. To disconnect heater, turn control to “OFF”, then
remove plug from receptacle.
2. Remove front diffuser grill by removing the four screws (one
from each corner).
3. Wash grill with hot soapy water and dry immediately, or use air
compressor to blow debris from grill louvers.
4. While holding fan (to avoid damage or bending), use an air com-
pressor, hair dryer or vacuum on blow cycle to blow debris through
the outer cabinet louvers and finned elements.
5. Vacuum or blow air inside fan area without touching the ele-
ments.
6. Carefully wipe off the fan blade without damaging or bending it.
7. Replace diffuser grill and secure with screws.
The plug does not
fit receptacle.
1. Heater is 240 volt requiring a 20 amp
or 30 amp 240 volt receptacle (see Fig-
ure 1 in “User Instructions”).
1. DO NOT alter cord. Install the proper 240 volt receptacle (see
Figure 1 in “User Instructions”) or return the heater in its original
condition.*
Heater does not
operate.
1. Heater is or has been blocked.
2. Thermostat set too low.
3. Circuit breaker not turned on.
4. Loose plug connection.
5. Defective manual reset limit.
1. Remove obstruction. Push manual reset button found in front lower
panel.
2. Turn knob clockwise until a click sound is heard.
3. Turn circuit breaker on.
4. Check plug connection.
5. Replace manual reset limit.*
Elements heat,
fan does not
operate.
1. Defective fan delay relay.
2. Jammed fan blade.
3. Defective motor.
1. Replace the fan delay relay.*
2. Remove obstruction.
3. Replace fan motor.*
Heater fan
operates,
but does not
discharge warm
air.
1. Manual reset limit tripped.
2. Fan switch is “ON” and thermostat
setting is below actual temperature.
3. Defective heater elements.
4. Wire loose from elements.
5. Temperature rise on heater is 40°F.
1. Allow heater to cool, then push reset.
2. Increase the thermostat setting; turn fan switch to “AUTO”.
3. Replace elements.*
4. Check and correct loose wire.
5. Close doors or windows. Provide additional insulation and/or heat-
ers. Wait for room to warm up.
Heater does not
shut off.
1. Heat loss from area is greater than
heater capacity.
2. Defective thermostat.
3. Fan switch in “ON” position.
4. Fan dispersing warm air after shut-
down.
1. Close doors or windows. Provide additional insulation and/or
heaters.
2. Replace thermostat.*
3. Change fan switch to “AUTO” setting.
4. Fan will shut off in approximately 90 seconds.
Heater
discharges
smoke.
1. Dust, dirt, and lint accumulated inside
the heater.
2. Jammed fan blade.
1. Clean heater. (See “Maintaining Your Heater” section for instruc-
tions). Blow dirt accumulation off heater with compressed air (air
compressor recommended).
2. Remove obstruction.
Manual reset limit
trips repeatedly.
1. Overheating.
2. Overheating at shutdown.
3. Overheating from excessive dust or
dirt particles.
4. Overheating due to elevation of
location.
1. Check all clearance requirements. 6” minimum clearance required
between top of heater and ceiling. Heater is not recommended for
ceiling mount.
2. Discontinue use of breaker to control heater, or replace time delay
switch.*
3. Clean heater (See “Maintaining Your Heater” section for instruc-
tions).
4. Location elevation exceeds recommended 7500 feet.
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