© 2009 Viking Preferred Service
41
Diagnostics
Short Cycle Test
Checks
Corrections
Hot Gas Valve / Solenoid
3. Check for frost on the evaporator plateduring the refrig-
eration cycle. If evaporator is not getting frosted, the hot
gas valve is not seating.
Replace valve.
4. Check evaporator plate for excessive ice build-up, if ice is
not releasing from the evaporator (a typical harvest cycle)
then the hot gas valve is not opening.
See step A below.
A. Check for voltage at solenoid (Approx. 120 when valve is
energized).
Replace valve.
B. Check resistance of solenoid coil.
Replace solenoid coil if open or shorted.
C. if voltage & resistance is good.
Replace valve assembly
1. These steps conclude the short cycle test, if necessary, continue to monitor the system as it advances
through another harvest cycle.
2. Please remember to turn on, or reconnect the supply water to the ice maker at the conclusion of the
short cycle test.
