Service manual

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Troubleshooting
F8343001
48
19. Heat Error (Machines with Auxillary Heat Only)
Heat Error (Machines with Auxillary Heat Only)
Is heat enabled in
programming?
Is the
DIP Switch 2
set to on?
Yes
Enable heat in programming.
No
No
Is there water in
the machine?
Yes
Refer to “Machine Does Not Fill with
Water” flowchart.
No
Is there 220V at H7-2
and H7-5 when the
heater output is on?
Yes
Refer to “No Outputs” flowchart.
No
For Steam Machines:
1. Check wiring at J14.
2. Check steam valve coil.
For Electric Heat Machines:
1. Check wiring at J14 and J5.
2. Check electric heat contactor coil(s).
4. Check voltage at heater elements.
Yes
CHM479S
Turn DIP Switch 2 on and cycle machine power.
3. Check voltage at line side/load side
of heat contactor.
CHM479S