TROUBLESHOOTING

WARNING: Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur.

FAULT CONDITION

POSSIBLE CAUSE

REMEDY

Motor does not start five seconds 1.

No power to heater

after heater is plugged in

Thermostat setting is too low

2.

1.Check circuit breaker in elec- trical panel

2.Turn thermostat knob to a higher setting

WARNING: High voltage!

 

3.

Bad electrical connection be-

3.

Check all electrical connec-

 

 

tween motor and ignition con-

 

tions. See Wiring Diagrams,

 

 

trol assembly or ignition control

 

page 15

 

 

assembly and power cord

 

 

 

 

4.

Binding pump rotor

4.

If fan does not turn freely, see

 

5.

Defective ignition control as-

 

Pump Rotor, page 14

 

5.

Replace ignition control as-

 

 

sembly

 

sembly

 

6.

Defective motor

6.

Replace motor

 

 

 

 

 

 

Motor starts and runs but heater

1. No fuel in tank

1.

Fill tank with kerosene

does not ignite

2. Pump pressure incorrect

2.

See Pump Pressure Adjust-

 

3.

Dirty fuel filter

 

ment, page 10

 

3.

See Fuel Filter, page 11

 

4.

Obstruction in nozzle

4.

See Nozzle Assembly, page 12

 

5.

Water in fuel tank

5.

Drain and flush fuel tank with

 

 

 

 

 

clean kerosene. See Storing,

 

 

 

 

 

Transporting, or Shipping,

 

 

 

 

 

page 7

 

 

 

WARNING: High voltage!

 

 

6.

Bad electrical connection

6.

Check electrical connections.

 

 

between ignitor and ignition

 

See Wiring Diagrams , page 15

 

 

control assembly

 

 

 

 

7.

Defective ignitor

7.

Replace ignitor, see page 11

 

8.

Defective ignition control as-

8.

Replace ignition control as-

 

 

sembly

 

sembly

 

 

 

 

 

 

Heater ignites but ignition control

1. Pump pressure incorrect

1.

See Pump Pressure Adjust-

assembly shuts heater off after a

2. Dirty air intake, air output,

 

ment, page 10

short period of time

2.

See Air Output, Air Intake, and

 

 

and/or lint filter

 

Lint Filters, page 10

 

3.

Dirty fuel filter

3.

See Fuel Filter, page 11

 

4.

Obstruction in nozzle

4.

See Nozzle Assembly, page 12

 

5.

Photocell assembly not properly

5.

Make sure photocell boot is

 

 

installed (not seeing the flame)

 

properly seated in bracket

 

6.

Dirty photocell lens

6.

Clean photocell lens

WARNING: High voltage!

7.Bad electrical connection be- tween photocell and ignition control assembly

8.Defective photocell

9.Defective ignition control as- sembly

7.Check electrical connections. See Wiring Diagrams, page 15

8.Replace photocell

9.Replace ignition control as- sembly

8

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Desa RC115CT, BC40, BC165CT, BC115CT, BC70T, BC55T, RC55T, RC70T, RC165CT Troubleshooting, Fault Condition Possible Cause Remedy

RC70T, RC165CT, BC55T, BC70T, RC115CT specifications

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