Heat Error
E Ht
(Electric Heat)
(A)
On AP2 is the
dipswitch set to on
to enable heat?
Is heat enabled in
programming?
Yes
Turn off power to the
machine. Set the
dipswitch per
schematic. Turn power
back on.
No
Is there water in the
machine?
Yes
Enable heat in
programming.
No
(B)
Is there 24VDC
between H14-1 and
H14-2?
Yes
See No Water Flow
Error (No Fill).
No
Is there proper line
voltage at the heat
contactor terminals
L1, L2, and L3?
No
(B1)
Low level pressure
sSwitch is open.
Check hoses and
wiring to switch.
Replace low level
pressure switch if
needed.
Yes
(D)
When heat step is on
is there 24VDC
between H14-5 and
H14-3?
Yes
Fix wiring to heat
contactors.
No
(D1)
Is there 24VDC at the
heat contactor coils?
Yes
Replace AP1.
No
Do the heat
contactors turn on?
Yes
Inspect wiring
between AP1 and heat
contactors. Replace
if needed.
No
Check heating
elements and wiring.
Yes
Replace contactor(s)
as needed.
No
Troubleshooting
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77
Part No. F8677701EN
Summary of Contents for SCA030FN
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