Hoshizaki C-101BAH Service Manual page 12

3) After all of the water has drained, move the control switch to the "OFF" position, then
unplug the appliance.
4) Remove the front panel, louver, and upper and lower rear panels.
5) Remove the screws securing the control box, then gently pull out the control box and
secure it in a safe position. Remove the control box cover.
6) Plug the appliance back into the electrical outlet.
7) Startup/Fill Cycle–Move the control switch to the "ICE" position. With LFS and
UFS open, WV energizes. Reservoir fills, LFS closes. Nothing happens at this time.
Reservoir continues to fill until UFS closes.
Diagnosis: Check that reservoir fills. If not, check water supply line shut-off valve, water
filters, and WV screen. Next, check for 115VAC at WV. If 115VAC is not present at WV,
check for 115VAC at WCR #8 (BK) to WCR #7 (W). If 115VAC is present, confirm that
UFS is open. See "II.D.1. Float Switch Check." If 115VAC is not present and WV is not
energized, check WCR #2 (O) to neutral (W) and #6 (BR) to neutral (W). If 115VAC is
not present at WCR #6 (BR) to neutral (W), check control switch position and continuity.
Also check wire connections to WCR. If 115VAC is present at WCR #6 (BR) to neutral
(W) and not present at WCR #2 (O) to neutral (W), replace WCR. If 115VAC is present
at WCR #2 (O) to neutral (W), check WV solenoid continuity. If open, replace WV.
Fill Cycle Complete: Check that UFS closes when reservoir is full. If not, check FS.
See "II.D.1. Float Switch Check."
8) Freeze Cycle–UFS closes and energizes WCR. WCR allows TDR to energize, then
TDR energizes GM, FM, and CR. CR then energizes Comp. WV de-energizes. Ice
production starts 4 to 6 minutes after Comp energizes depending on ambient and water
conditions.
WCR Diagnosis: Confirm WCR energizes. If not, confirm UFS is closed.
See "II.D.1. Float Switch Check." With UFS closed, check for 115VAC at WCR #8 (BK)
to WCR #7 (W). If 115VAC is not present, check control switch position and continuity.
Also check wire connections to FS and WCR. If 115VAC is present, check that WV
de-energized. If not, check for 0VAC at WCR #2 (O) to neutral (W). If 115VAC is present,
replace WCR. Next, check for 115VAC at WCR #5 (BR) to neutral (W) and WCR #3 (P)
to neutral (W). If 115VAC is not present at WCR #5 (BR) to neutral (W), check control
switch position and continuity. Also check wire connections to WCR. If 115VAC is
present at WCR #5 (BR) to neutral (W) and not at WCR #3 (P) to neutral (W), WCR
is not energized or contacts are sticking. Replace WCR. If 115VAC is present at WCR
#3 (P) to neutral (W), WCR is good and TDR energizes. TDR Diagnosis: Confirm
115VAC at TDR #2 (BR) and TDR #5 (P) to TDR #3 (W). If 115VAC is present at TDR
#2 (BR) and not at TDR #5 (P), see WCR Diagnosis above. If 115VAC is present at TDR
#2 (BR) and TDR #5 (P) to TDR #3 (W) and GM does not start, check for 115VAC at
TDR #8 (BR) and TDR #9 (W/R) to neutral (W). If 115VAC is present at TDR #8 (BR)
and not at TDR #9 (W/R), replace TDR.
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