User Guide

14
If 120vac is not present then replace the main control board. If 120vac is present then the fusible link is
defective, replace the dual element/fusible heater.
Next select low on the touch keypad, the blower should start running and 10 seconds later the low heat
should start; you will hear the contacts clicking of the control relay on the main control board. Select high
heat and you will hear the contacts clicking of the control relay on the main control board. If the clicking
is not heard, repeat the above test only for high heat. Check for 120vac between terminals 750W (upper
terminal) and AC-N3. If 120vac is not present change out main control board. Refer to Figure 18.
AC-N3
750W (upper terminal)
Figure 18, high heat 120vac
In order to change out the dual element heater, remove blower assembly as described in section “Blower
Assembly”. Remove the 4 mounting screws, 2 on each side of the dual element heater. Refer to Figure 19.
Remove and replace with new heater assembly. Install blower assembly.
Figure 19
Screws holding dual element heater to blower.