Continued

TROUBLE- SHOOTING

Item

How Often

How To

Spark plug

Clean and regap every 600

See Spark Plug, pages 12 and 13.

 

hours operation or replace

 

 

as needed.

 

Fan blades

Clean every season or as needed. See Fan, page 19.

Motor

Not required/permanently lubricated

WARNING

WARNING ICONG 001

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

OBSERVED FAULT

Heater ignites, but flame-out control shuts off heater after a short period of time.

POSSIBLE CAUSE

Wrong pump pressure

Dirty air output, air intake, and lint filters

Dirty fuel filter

REMEDY

See Pump Pressure

Adjustment, page 14.

See Air Output, Air Intake and Lint Filters, page 14.

See Fuel Filter, pages 10 and 11.

Dirt in nozzle

See Nozzle, pages 15 thru 17.

Dirty photocell lens

Clean photocell lens.

Bad flame-out control

Replace flame-out control.

Heater will not ignite, but motor runs for a short period of time.

Wrong pump pressure

See Pump Pressure

 

Adjustment, page 14.

Carbon deposits on spark

See Spark Plug, pages 12

plug and/or improper gap

and 13.

Dirty fuel filter

See Fuel Filter, pages 10

 

and 11.

Dirt in nozzle

See Nozzle, pages 15 thru

 

17.

Water in fuel tank

Drain and flush fuel tank

 

with clean kerosene. See

 

Storing, Transporting, or

 

Shipping, page 8.

WARNING ICONG 001 WARNING: High voltage!

Electronic ignitor not

Make sure electronic

grounded (earthed)

ignitor mounting is tight.

Bad electronic ignitor

Replace electronic ignitor.

Motor does not start

Flame-out control not reset

Reset flame-out control

when heater is

 

button, see Figures 6 thru

plugged in, fan

 

8, pages 7 and 8.

rotates slowly or

Binding pump rotor

If fan is hard to turn, see

does not turn.

 

Pump Rotor, page 18.

 

 

 

 

 

 

 

 

 

9

 

 

 

 

099623

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Desa 8 (30, 44 kW (150, 5 (70, 4 (90, 20, 26, 000 Btu/Hr) owner manual TROUBLE- Shooting, How Often How To