1. Evaporator Temperature
Probe out of adjustment
(reads too warm), or is
defective (open).
2. Actuator Motor won’t raise
Water Plate.
3. Actuator Motor won’t lower
Water Plate.
4. Controller is defective.
5. Arms-down Switch is stuck
open (Lowering) Cam
rotates CCW & wraps
spring around cam shaft,
causing Cam or Spring
damage.
6. Arms-Down Switch stuck
closed (plate supposed to
lower, but is staying up.)
7. Hot Gas Valve won’t open.
8. During harvest, Evaporator
Probe out of adjustment
(reads too cool) or
defective. (Ice production
may be low!)
9. Bad Contactor
(Compressor would be off!)
1. On the Controller, adjust
Evaporator Probe pot
CW, to a colder setting,
so that the Water Plate
returns to the closed
position about 5 sec. after
ice releases. If
Evaporator Probe is non-
responsive, and Actuator
motor is confirmed
operational, then replace
the Evaporator Probe.
2. Replace Actuator Motor –
(motor should drive up
when Water Plate is down
& Evaporator Probe is >
38F. (35-45F)).
3. Replace Actuator Motor
4. Replace Control Board
(When Water Plate is
down & Evap Probe is >
38F, there should be line
voltage to the Actuator
Motor, between pins 2 &
8*, on the green output
connector of the
Controller. If voltage not
present, replace the
Controller.
5. Free up, adjust or replace
Arms-Down Switch or
repair open wiring.
6. Free up, adjust or replace
Arms-Down Switch or
repair shorted wiring.
7. Check power from the
controller to the Valve
Coil, to determine if
problem is electrical or
the Valve is just stuck
closed. Replace Coil,
Controller, wiring or
Valve, as required.
8. Adjust Evaporator Probe
warmer, or replace if not
responding.
9. Replace Contactor.
(*Check pins 2 & 10, for
upper Actuator Motor, on
dual-Evaporator
machine).
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