Dimplex 7400050000R04 Parts And Service Manual page 23

TDS8515
TROUBLESHOOTING GUIDE
HEATER (CONTINUED)
Problem
Heater Turns Off
after a few minutes
of operation but
flame stays On
Heater fan runs
continuously
NOISE
Problem
Excessive noise
with the heater on
Grinding or
excessive noise
with the heater off
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Cause
Build up of dirt in heater
assembly
Build up of dirt in Purifire
Filter
Defective Heater Assembly
Loose wiring
Defective thermostat
Defective heater assembly
Cause
Dirty blower assembly
Defective blower assembly
Flicker rod hitting or rubbing
against internal components
Defective flicker motor
Solution
Vacuum/Clean Heater
Assembly
Clean/Replace Filter
Replace Heater Assembly
Trace wiring in unit
Replace the thermostat
Replace heater assembly
Solution
Clean blower assembly
Replace heater assembly
Flicker rod replacement
Replace flicker motor
22
Service Manual
Reference
Page 10
Page 13
Page 5
Page 17
Page 13
Service Manual
Reference
Page 13
Page 15
Page 15