Icemaker Operational And Diagnostic Sequences; Circuitry Notes - Follett Symphony 25HI400A Installation & Service Manual

Icemaker operational and diagnostic sequences
The wiring diagrams that follow illustrate the circuitry of Follett icemakers. Both normal operation (stages 1 - 6) and
non-normal diagnostic sequences showing torque-out (stages 7 - 10) for use in troubleshooting are shown.

Circuitry notes

The icemaker receives power from two sources – the main power supply and the bin control signal power from the
dispenser. Disconnect both power sources before performing service. When performing electrical service, always use a
meter to determine whether or not the components being serviced are energized.
High pressure cutout opens at 425 PSO and closes at 287 PSI (auto reset)
Compressor switch should read open in ON position.
Compressor start relay is position sensitive.
• Electrical box must be in "UP" position
before supplying power
• Start relay is gravity sensitive, and MUST
be in "UP" position
• Failure to comply may cause equipment
to overheat, resulting in equipment failure,
equipment damage or fire hazard
Bin signal is 115V, 60Hz.
Flashing water LED at any time indicates that water signal to board has been lost for more than one second.
Ten-second delay: There is a 10 second delay in reaction to loss of water (WTR) or bin (B-E) signals. If signals are not
lost for more than 10 seconds, no reaction will occur.
25CI400A/W • 25HI400A • 50CI400A/W • 50HI400A
WARNING
!
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