Bin Control Check - Hoshizaki SRC-14H Service Manual

D. Bin Control Check
1. Bin Control 1 (infrared sensor) Check
Make sure S1 dip switch 7 is in the "ON" position. This allows the control board
to monitor the BC1 (infrared sensor) along with the BC2 (mechanical backup) bin
control.
1) Remove the front panel.
2) Move the power switch to the "OFF" position, then unplug the appliance from the
electrical outlet.
3) Remove the control box cover and access CB. Confirm that S1 dip switch 1, 2, 3 are in
the proper position for your application. See "III.B.2. BC1 (Infrared Sensor) Shutdown
Delay (S1 dip switch 1, 2, 3)."
4) Confirm that BC1 is connected to CB K6 connector. Wipe down the lens with a warm,
clean, damp cloth. If the bottom of the icemaker is not accessible in your application,
remove the thumbscrew securing the BC1 housing, then remove the housing from the
base. See Fig. 3.
5) Make sure the control switch is in the "ICE" position, then plug the icemaker into the
electrical outlet.
6) Move the power switch to the "ON" position to start the automatic icemaking process.
Check that BC1 green LED is on. The BC1 green LED confirms 20VDC from CB to BC1
and remains on constantly. Diagnosis: If the BC1 green LED is not on, confirm 20VDC
at CB K6 pin #1 (DBU) to CB K6 pin #3 (BR). If 20VDC is present and the BC1 green
LED is off, replace BC1. If not, see step "3) BC1 (infrared sensor) Power Supply," under
"II.C. Control Board Check."
7) Make sure CB "GM" LED is on. There is a delay of at least 30 sec. before CB "GM" LED
turns on after power-up. After CB "GM" LED turns on, press CB "SERVICE" button to
bypass the 5-min. ice purge cycle. WARNING! Risk of electric shock. Care should be
taken not to touch live terminals.
Connector
(20VDC from
K6 connector on
control board)
Housing
IMPORTANT
BC1 (infrared sensor)
LEDs
LEDs
Lens
Fig. 3
27
Thumbscrew
Housing
Lens