Service Manual

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7) Pump-Out Cycle – LEDs 1, 3, and 2 are on (10/20 second pump-out). Timing of the
rst pump-out is determined by S4 dip switch 5. See the table below.
Control Board Settings
S4 Dip
Switch
Setting
Pump-Out
Frequency
1st Pump-Out
No. 5
OFF Every 10 cycles After 11th freeze cycle
ON Every cycle After 2nd freeze cycle
Comp and FMR continue, HGV energizes. If S4dip switch 3 & 4 are set to 3off Comp
continues, HGV energizes, FM and LLV (if applicable) de-energizes. NOTICE!S4dip
switch 3 & 4 must not be set to 3 off and 4 on. Otherwise, LED 4 turns on
energizing WV, X11, and X10 relay. Once X10 relay energizes, X12 relay, PM, and
DV cannot energize. PM stops for 2 sec., then X12 relay, PM, and DV energize for
10/20 sec. depending on pump-out timer (S4 dip switch 3 & 4) setting. When pump-out
timer terminates, pump-out is complete. The pump-out frequency control (S4 dip switch
5) is factory set, and generally no adjustment is required. However, the pump-out
frequency control can be set to have a pump-out occur every 10 cycles or every cycle.
For details, see "III.C.4. Pump-Out Frequency Control (S4 dip switch 5)."
a) Pump-Out Diagnosis: In the freeze cycle before pump-out (see table above), after
5min. of freeze disconnect CB black K5 connector (FS connector). Check that CB
LEDs 1, 3, and 2are on, PM stops, then re-starts, DV energizes, and water is owing
down the drain through DV.
b) CB Diagnosis: Conrm FM and LLV (if applicable) de-energize. If FM or LLV
(ifapplicable) is energized with LEDs 1, 3, and 2 on, replace CB. If PM does not
stop and re-start and DV does not energize, check that CB LEDs 1, 3, and 2 are on.
Ifnot, replace CB. IfLEDs 1, 3, and 2 are on and X12 relay is not energized, check
for 115VAC at CB K1 #5 (DBU) to neutral (W). If 115VAC is not present, replace CB.
If115VAC is present at CB K1 #5 (DBU) and X12 relay is not energized, continue to
"c) X12 Relay, PM, and DV Diagnosis:" below. If X12 relay is energized and PM and
DV are not energized, check for 115VAC at CB K1 #2 (P) to neutral (W). If LED 2 is
on and 115VAC is not present at CB K1 #2 (P), replace CB.
c) X12 Relay Diagnosis: If 115VAC is present at CB K1 #5 (DBU) and CB K1 #2
(P) and X12 relay, PM, and DV are not energized, check for 115VAC at X12 relay
#8 (DBU) to neutral (W). If115VAC is not present, check wiring connections from
CB K1 #5 (DBU) to X10 relay #5 (DBU), then at X10 relay #1 (DBU). If 115VAC is
present at X10 relay #5 (DBU) and not at X10 relay #1 (DBU), conrm X10 relay is
de-energized, if X10 relay is de-energized, replace X10 relay (sticking contacts). If
115VAC is present at X12 relay #8 (DBU) to neutral (W), and X12 is de-enrgized,
check relay coil continuity. Replace as needed.