Ice-O-Matic GEM0650R, GEM1256R, GEM0956R Control System Diagnostics, High pressure cut out check

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GEM0650/0956/1256 Remote

Control System Diagnostics

The Control System consists of: ●Control Board

●Water Sensors

●Ice Sensors

●High Pressure Cut Out

●Low Pressure Cut Out

If the unit is OFF, check the control board:

1.Is the Power OK light on? If not check power to the unit. If it has power, and the Power OK light is not on, check the high pressure and low pressure cut outs. If they are both closed, replace the board. If the POWER OK light is ON, go to the next step.

2.Is the Water OK light on? If it is, go to the next step. If not, check the water level in the reservoir. If there is water in the reservoir, check that the water sensor is plugged in. To check the water sensor:

a.Unplug the water sensor.

b.Pull the water sensor from the reservoir.

c.Place one ohmmeter lead on the sensor’s plug and the other on the sensor’s tip. The meter should show nearly zero (0) resistance. If it reads infinite resistance, check the tip for corrosion. If it is clean and still reads open, replace the sensor.

OR, connect a copper wire to the wire where the water sensor plugs into and place the other end in the water. The WATER OK should go ON. If it does not, replace the board.

3.Ice sensor Check. Is the BIN FULL light OFF? If it is OFF and the SERVICE light is OFF and the unit is not running, replace the control board.

a.If it is OFF and the auger motor is running but the compressor is not, check the compressor contactor coil.

b.If it is ON, the ice sensors may be blocked. Remove them and check for mineral scale.

4.High pressure cut out check.

a. Disconnect electrical power.

b. Pull the wires off the high pressure cut out.

c. Use an ohmmeter to determine if the switch is OPEN. If it is, check the discharge pressure. If the discharge pressure is less than 300 PSIG, replace the high pressure cut out.

d. If the high pressure cut out is open and the system has high discharge pressure, check for the cause.

5.Low pressure cut out check.

a.Disconnect electrical power.

b.Pull the wires off the low pressure cut out.

c.Use an ohmmeter to determine if the switch is OPEN. If it is, check the suction pressure. If the suction pressure is greater than 20 PSIG, replace the low pressure cut out.

d.If the low pressure cut out is open and the system has low suction pressure, check for the cause.

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Contents Pearl Ice Series By Ice-O-MaticPage Introduction Keep this manual for future referenceTable Of Contents Visible Loss or Damage Freight Claim ProcedureInspect Promptly Concealed Loss or DamageWarranty Governing LAWFor the Installer GEM0650/0956R GEM1256R Ice Machine Specifications Bin ApplicationIce machine LocationStorage Bin Water LimitationsPearl Ice Number ERC Dimensions Inches GRC1001 GRC1061 GCR2061Remote Condenser Line SetsCalculation Example Remote Condenser LocationCalculation Formula Precharged Line Set Routing Remote Condenser LocationRoof Attachment Typical Installation Coupling Instructions Initial Connections Final ConnectionsDrains Ice Machine For the PlumberWater Inlet For the Electrician Completed Installation Final Check List Pre-Start Inspection There are no adjustments to make, so replace the panelsStart Up Start UpComponent Description Control Board GEM0650/0956/1256 Remote Electrical Sequence Water Level Operation WaterWater Water SystemRefrigeration Schematic Operation RefrigerationLow Condensing Temperature Pump Down Operation Performance Sanitizing and Cleaning Condenser Maintenance Brush in direction of finsBearing Maintenance Bearing MaintenanceWater Sensor Sensor MaintenanceBin Control Sensor Auger Maintenance AugerService Diagnosis Symptom Possible Cause Probable CorrectionSymptom Control System Diagnostics High pressure cut out checkBin Controls Ice Level Sensors Water Reservoir, Bin ControlWater Reservoir To Remove the Breaker Bearing Assembly Bearing and BreakerAuger To Remove the AugerRemoval of the Water Seal To Replace the Water Seal Water SealTo Remove the Water Seal Replacing the Water SealTo Reassemble the Evaporator and Auger EvaporatorTo Replace the Evaporator To Check the Gear Motor To Remove and Repair the Gear Motor AssemblyGear Motor To Inspect the Gear MotorTo Remove the Condenser Fan Motor Assembly Fan Blade and MotorRefrigeration Service Charging ProcedureGEM0650R Wiring Diagram Wiring Diagram GEM0650RGEM0956R Wiring Diagram Wiring Diagram GEM0956RGEM1256R Wiring Diagram Wiring Diagram GEM1256RService History What to Do Before Calling for Service
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