Dimplex DS7420 - Manual (Page 12)

12 www.dimplex.com
PROBLEM CAUSE SOLUTION
Heater Continued
Heater is not turning on
Improper operation Refer to Operation Section
Defective heater assembly Replace heater assembly
Defective heater on/off switch Replace heater on/off switch
Heater is turning off after a
couple of minutes of operation
Build up of dirt/dust in heater assembly Clean out heater assembly
Defective Motor Replace Motor
Heater emits an odor Normal Operation Normal operation is when the heater emits an odor
for a brief period after the heater is initially turned on.
The heater is burning off any dust accumulated during
manufacturing or operation.
Defective heater assembly Replace heater assembly
Heater fan turns on but heater
lacks heat
Improper operation Refer to Operation Section
Defective thermostat Replace thermostat
Loose wiring Trace wiring in unit
Defective heater assembly Replace heater assembly
Heating element is glowing red Normal Operation Small glowing sections of the element are considered
normal.
Defective heater assembly If larger glowing sections are causing the heater to trip
the thermal cutout, unplug unit, discontinue use and
replace heater assembly.
Heater fan runs continuously Loose wiring Trace wiring in unit
Defective heater on/off switch Replace heater on/off switch
Defective heater assembly Replace heater assembly
Defective thermostat Replace thermostat
Noise
Excessive noise with the heater
on
Dirty blower assembly Clean blower assembly
Defective blower assembly Replace heater assembly
Grinding or excessive noise with
the heater off
Moving flame rod hitting or rubbing
against internal components
Ensure rod is straight and mounted properly in the
bracket, spinning freely away from other components.
Replace if necessary.
Defective flame motor Replace flame motor