Manitowoc J250 User Manual

Section 6Electrical System
6-52
Ice Machine Does Not Cycle Into Harvest When Water Contacts Probe
1. Bypass the freeze time lock-in feature by moving the ICE/OFF/CLEAN switch to OFF and back to ICE.
2. Clip the leads of a jumper wire onto the ice thickness probe to try to initiate a harvest cycle.
3. Monitor the harvest light.
Dual Probe
Single Probe
Monitoring of Harvest Light Correction
The harvest light comes on, and 6-10 seconds later,
ice machine cycles from freeze to harvest.
The control circuitry is functioning properly. Do not
change any parts.
The harvest light comes on but the ice machine
stays in the freeze sequence.
The control circuitry is functioning properly. The ice
machine is in a six-minute freeze time lock-in.
The harvest light does not come on. Proceed to Step 4, below.
4. Disconnect the ice thickness probe from the control board.
5. Clip the jumper wire leads to terminal 1C on the control board and ground to try to initiate a harvest cycle.
6. Monitor the harvest light.
Dual Probe
Single Probe
Monitoring of Harvest Light Correction
The harvest light comes on, and 6-10 seconds later,
ice machine cycles from freeze to harvest.
The ice thickness probe is causing the malfunction.
The harvest light comes on but the ice machine
stays in the freeze sequence.
The control circuitry is functioning properly. The ice
machine is in a six-minute freeze time lock-in.
The harvest light does not come on. The control board is causing the malfunction.
SV1573
SV1592
SV1593SV1574
ICE THICKNESS PROBE
CONTROL BOARD
JUMPER WIRE
EVAPORATOR
ICE THICKNESS PROBE
GROUND
EVAPORATOR
ICE THICKNESS PROBE
CONTROL BOARD
JUMPER WIRE
EVAPORATOR
GROUND
JUMPER WIRE
CONTROL BOARD
ICE THICKNESS PROBE
EVAPORATOR
JUMPER WIRE
CONTROL BOARD
DISCONNECTED PROBE WIRE

Manitowoc J250 Specifications

General

Brand	Manitowoc
Model	J250
Category	Ice Maker
Language	English