Desa RJ70 - Manual (Page 6)

6 104950
PORTABLE FORCED AIR HEATERS
RJ45 And RJ70
TROUBLESHOOTING
RJ45
WARNING: Never service heater while it is plugged in, operating, or
hot. Severe burns and electrical shock can occur.
REMEDY
1. Check circuit breaker in electrical panel
2. Check all electrical connections. See
Wiring Diagrams, page 12
3. If fan does not turn freely, see Pump Ro-
tor, page 11
4. Replace ignition control assembly
5. Replace motor
6. Replace ON/OFF switch
1. Fill tank with kerosene
2. See Pump Pressure Adjustment, page 8
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Drain and flush fuel tank with clean
kerosene. See Storing, Transporting, or
Shipping, page 5
6. Check electrical connections. See Wir-
ing Diagrams, page 12
7. Replace ignitor, see page 9
8. Replace ignition control assembly
1. See Pump Pressure Adjustment, page 8
2. See Air Output, Air Intake, and Lint Fil-
ters, page 8
3. See Fuel Filter, page 9
4. See Nozzle, page 10
5. Make sure photocell boot is properly
seated in bracket
6. Clean photocell lens
7. Check electrical connections. See Wir-
ing Diagrams, page 12
8. Replace photocell
9. Replace ignition control assembly
OBSERVED FAULT
Motor does not start five seconds after heater
is plugged in and switched ON
Motor starts and runs but heater does not
ignite
Heater ignites but ignition control assembly
shuts heater off after a short period of time
POSSIBLE CAUSE
1. No power to heater
2. Bad electrical connection between mo-
tor and ignition control assembly or ig-
nition assembly and power cord
3. Binding pump rotor
4. Defective ignition control assembly
5. Defective motor
6. Defective ON/OFF switch
1. No fuel in tank
2. Pump pressure incorrect
3. Dirty fuel filter
4. Obstruction in nozzle
5. Water in fuel tank
6. Bad electrical connection between igni-
tor and ignition control assembly
7. Defective ignitor
8. Defective ignition control assembly
1. Pump pressure incorrect
2. Dirty air intake, air output, and/or lint
filter
3. Dirty fuel filter
4. Obstruction in nozzle
5. Photocell assembly not properly in-
stalled (not seeing the flame)
6. Dirty photocell lens
7. Bad electrical connection between pho-
tocell and ignition control assembly
8. Defective photocell
9. Defective ignition control assembly
WARNING: High voltage!
WARNING: High voltage!
WARNING: High voltage!