Service Manual

20
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 Control Board
No. 5
OFF Every 10 cycles After 11th freeze cycle
ON Every cycle After 2nd freeze cycle
Comp and FMRs continue, HGVs energize.
Note: If S4 dip switch 3 & 4 are set to 3 off and 4 on, LED 4 turns on and WV2 and X12
relay energize, energizing X13 relay. NOTICE!S4dip switch 3 & 4 must not be set to
3 off and 4 on. Otherwise, LED 4 turns on energizing WV2, X12, and X13 relays.
Once X13 relay energizes, DV cannot energize.
LLVs de-energize. PM stops for 2 sec., then restarts for 10/20 sec. depending on
pump-out timer (S4dip switch 3 & 4) setting. When the 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 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 restarts, DV energizes, and water is owing
down the drain through DV.
b) CB Diagnosis:
PM: If PM does not stop and restart, check that CB LEDs 1, 3, and 2are on.
Ifnot and pump-out is called for, replace CB. IfLEDs 1, 3, and 2are on, X11 relay
energizes. If not, 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 X11 relay is not
energized, continue to "c) PM Diagnosis:" below.
DV: If DV is not energized, check for 115VAC at CB K1 #1(V) to neutral(W).
If LED 2 is on and 115VAC is not present at CB K1 #1 (V), replace CB. If 115VAC is
present at CB K1 #1 (V) to neutral (W), continue to "d) DV Diagnosis" below.
c) PM Diagnosis: If 115VAC is present at CB K1 #5 (DBU), X11 relay energizes. Check
for 115VAC at X11 relay #8 (DBU) to neutral (W). If115VAC is not present, check
wiring connections from CB K1 #5 (DBU) to X11 relay #8 (DBU). If115VAC is present
at X11 relay #8 (DBU) and PM does not restart, check for 115VAC at X11 relay
terminal #4 (P) and terminal #(6) to neutral (W). If115VAC is present on #4 (P) and
not on #6 (R), replace X11 relay (sticking contacts). If 115VAC is present at X11 relay
#6 (R) and PM is de-energized, check for 115VAC at control switch
#6 (R) and #5(W/R) to neutral (W). If 115VAC is present at #6 (R) and not at
#5 (W/R), replace control switch. If 115VAC is present at control #5 (W/R), check PM
capacitor, motor winding, wiring connections, and impeller for binding.