Pitco Solstice SE Series, Service Manual, Page: 53 / 72

Pitco Solstice Electric Fryers
SE Series Service Manual 53
When the board receives a 24 VDC HD input at pin #6 on connector J31 or J33, the HD indicator is illuminated,
the HD relay is energized and there is continuity between pin #1 and pin #2 at connector J32.
Computer Control
NOTE: All controller test points are at connector P/J1 (closest connector to the controller).
With 24 VAC supplied to pin #1(24 VAC supply) and pin #5 (24 VAC input from DVI), the display reads
“READY”.
When the controller is turned on, there is a 24 VDC output at pin #9 (SO).
When the controller calls for heat, there is a 24 VDC output at pin #8 (HD) and a 24 VAC input at pin #6 (HFB).
If the HD contactor does not pull in, this indicates a break in the HD circuit.
To correct, do the following:
1. Check the hi-limit switch. Is it open or tripped?
2. Check the HD relay on the relay board. Is the HD relay energized, continuity through COM and NO contacts?

If display reads “PROBE OP” “OPEN”, Ω test the temperature probe. Check the wires and connectors
between the probe and controller for continuity.

If display reads “SYSTEM” ‘FAILURE”, Ω test the temperature probe, and the wires and connectors between
the probe and controller for a short.

If display reads “DRAINING” “TURN OFF”, verify that the drain valve is closed, check the proximity switch
on the drain valve, turn the fryer off, and then turn the fryer on.
Backup Solid State Control
The 24 VAC supply passes through the solid state back-up transfer switch to the computer. If the transfer switch
is set to back-up or if the back-up controller has been unplugged, the primary controller will not work. A jumper
must be installed on the relay board (connection J33, pin #2 to pin #10) to allow the primary controller to function
if the back-up controller is removed.
24 VAC is supplied to the controller at pin #1 (24 VAC supply) and pin #5 (24 VAC input from DVI).
When the controller turned on, there is a 24 VDC output at pin #9 (SO) and the green indicator is illuminated.
When the controller calls for heat, there is a 24 VDC output at pin #8 (HD), the yellow indicator on the left is
illuminated, and there is a 24 VAC input at pin #6 (HFB).
When the controller receives the 24 VAC input at pin #6, the yellow indicator on the right is illuminated. If the
controller does not receive the 24 VAC input at pin #6, the indicator is not illuminated. This indicates a break in
the HD or HFB circuit.
To correct, do the following:
1. Check the hi-limit switch. Is it open or tripped?
2. Check the HD relay on the relay board. Is the HD relay energized, continuity through COM and NO
contacts?