Desa B350D, B600D owner manual Troubleshooting, Observed Problem, Possible Cause, Remedy

OWNER’S MANUAL

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. Only a qualified service person should service and repair heater.

OBSERVED PROBLEM POSSIBLE CAUSE REMEDY

Motor does not start when heater is plugged in and thermostat setting is higher than surrounding air temperature

1.No power or low voltage at heater due to:

A)Damaged power cord or extension cord

B)Wrong size extension cord

C)Heater plugged into outlet with volt- age lower than 120 volt

2.Loose electrical connections

3.Motor overload protector tripped due to:

A)Dirty fan

B)Debris pulled into fan area by fan

C)Binding pump

D)Low voltage

4.Flame-out control not reset

5.Damaged flame-out control

6.Damaged power relay

7.Damaged thermostat

8.Binding pump

1.A) Check condition of power cord or ex tension cord. Repair or replace damaged

B)Use extension cord with proper wire size (see To Start Heater, page 5)

C)Make sure heater is plugged into 120 volt/60 hertz outlet

2.Check connections. Tighten if loose

3.A) See Fan Blades and Air Deflectors, page 10

B)Remove debris from fan and fan guard area

C)Turn fan by hand. If fan is hard to turn, see Pump, page 11

D)See steps B and C under item 1 above

Note: Be sure to reset motor overload protector by pressing reset button on top of motor.

4.Press and release flame-out control re- set button. See Figure 4, page 5 for but- ton location

5.Replace flame-out control

6.Replace power relay

7.Replace thermostat

8.Turn fan by hand. If fan is hard to turn, see Pump, page 11

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Continued

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