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TW-357 REV E
42
Fill Solenoid Cycles On and Off
KRYOS features a Freeze-Guard function whereby the valve open duration is limited, allowed to shut for a
short warm-up and then opened again. To confirm or change the valve open duration:
• Select MENU, USER OPTIONS, CONTROL OPTIONS, FREEZE-GUARD OPTIONS, VALVE
OPEN DURATION.
If the controller detects that the valve is stuck in the open position (i.e., continues to fill after the valve is de-
energized), it will attempt to De-Ice the valve by causing a rapid cycling of the valve in an attempt to dislodge
the blockage.
• To activate or de-activate this feature: Select MENU, USER OPTIONS, CONTROL OPTIONS,
FREEZEGUARD OPTIONS, VALVE DE-ICING.
Repeated cycling of the solenoid valve could be attributable to moisture invasion on the controller circuit
board.
1. Check gasket seals.
2. Access control board and allow time to fully dry.
Fill Solenoid Makes Humming Noise
Turn fill valve on and off using the control panel. If humming continues, it should continue to operate reliably.
If the noise is excessive, replace solenoid valve.
Transformer Makes Humming Noise
This noise is a normal byproduct of most block transformers. The transformer has a non-renewable internal
fuse to protect the transformer output. If the noise is excessive, replace the transformer.
Display = “Check”
The word CHECK will flash during periods of Splash-Guard protection. See page 29 for more information.
Lid Open Alarm
A lid switch is located on the front hinge. The switch lever should actuate when the hinge is opened and again
when it is shut.
1. Confirm that the two spade connectors are connected to the back of the switch. They should be attached to
the “G” and the “N/C” connections.
2. The switch can be bumped or moved during shipment. Adjust switch up until closed hinge will actuate
switch lever.
QCF (Quick Chill Feature) Will Not Operate
See LID OPEN ALARM
To activate or adjust times: Select MENU, USER OPTIONS, CONTROL OPTIONS, LID/DEFOG
SETTINGS, QUICK CHILL.