110,000 Btu/Hr H.S.I. Series

PORTABLE FORCED AIR HEATER

TROUBLESHOOTING

Note: For additional help, visit DESA International’s Technical Service web site at www.desatech.com.

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

OBSERVED FAULT

POSSIBLE CAUSE

REMEDY

Motor does not start five seconds after heater

1.

No power to heater

1.

Check circuit breaker in electrical panel.

is plugged in

2.

Thermostat setting too low

2.

Turn thermostat knob to a higher setting

 

 

 

 

 

 

 

 

WARNING: High voltage!

 

 

 

 

 

 

 

 

 

3.

Bad electrical connection between mo-

3.

Check all electrical connections. See

 

 

tor and ignition control assembly or ig-

 

Wiring Diagram, page 11

 

 

nition control assembly and power cord

 

 

 

 

4.

Blown fuse on ignition control assembly

4.

See Ignition Control Assembly, page 10

 

5.

Binding pump rotor

5.

If fan does not turn freely, see Pump

 

 

 

 

 

Rotor, page 10

 

6.

Defective ignition control assembly

6.

Replace ignition control assembly

 

7.

Defective motor

7.

Replace motor

 

 

 

 

 

 

 

Motor starts and runs but heater does not

1.

No fuel in tank

1.

Fill tank with kerosene

ignite

2.

Pump pressure incorrect

2.

See Pump Pressure Adjustment, page 7

 

3.

Dirty fuel filter

3.

See Fuel Filter, page 8

 

4.

Obstruction in nozzle assembly

4.

See Nozzle Assembly, page 9

 

5.

Water in fuel tank

5.

Drain and flush fuel tank with clean kero-

 

 

 

 

 

sene. See Storing, Transporting, or Ship-

 

 

 

 

 

ping, page 5

WARNING: High voltage!

6.Bad electrical connection between igni- tor and ignition control assembly

7.Defective ignitor

8.Defective ignition control assembly

6.Check electrical connections. See Wir- ing Diagram, page 11

7.Replace ignitor, see page 8

8.Replace ignition control assembly

Heater ignites but ignition control assembly

1.

Pump pressure incorrect

1.

See Pump Pressure Adjustment, page 7

shuts heater off after a short period of time

2.

Dirty air intake, air output, and/or lint

2.

See Air Output, Air Intake, and Lint Fil-

 

 

filter

 

ters, page 7

 

3.

Dirty fuel filter

3.

See Fuel Filter, page 8

 

4.

Obstruction in nozzle assembly

4.

See Nozzle Assembly, page 9

 

5.

Photocell assembly not properly installed

5.

Make sure photocell boot is properly

 

 

(not seeing the flame)

 

seated in bracket

WARNING: High voltage!

6.Dirty photocell lens

7.Bad electrical connection between pho- tocell and ignition control assembly

8.Defective photocell

9.Defective ignition control assembly

6.Clean photocell lens

7.Check electrical connections. See Wir- ing Diagram, page 11

8.Replace photocell

9.Replace ignition control assembly

www.desatech.com

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Desa R110BT, REM110BT, B110BT owner manual Troubleshooting

B110BT, REM110BT, R110BT specifications

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