IV. Service Diagnosis
WARNING
1.This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire.
2.Risk of electric shock. Use extreme caution and exercise safe electrical practices.
3.Moving parts (e.g., fan blade) can crush and cut. Keep hands clear.
4.CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after the unit is serviced. Make sure that none have fallen into the dispenser unit/storage bin.
5.Make sure all food zones in the icemaker and dispenser unit/storage bin are clean after the unit is serviced. For cleaning procedures, see "VI. Cleaning and Maintenance."
A. Ice Production Check
To check production, prepare a bucket or pan to catch the ice and a set of scales to weigh the ice. After the icemaker has operated for 10 to 20 minutes, catch the ice production for 10 minutes. Weigh the ice to establish the batch weight. Multiply the batch weight by 144 for the total production in 24 hours.
B. Diagnostic Procedure
This diagnostic procedure is a sequence check that allows you to diagnose the electrical system and components. Before proceeding, check for correct installation, adequate water supply (minimum of 10 PSIG, maximum of 113 PSIG) and proper voltage per unit nameplate. Check that the 24VAC 1A fuse and the 115VAC 3A GM fuse are good. When checking for
Note: EH energizes when "GM" LED turns on. CB X1 Comp relay energizes PDS. Pressure rises in the refrigeration system and closes CLPS. MC is energized when CLPS closes, energizing Comp and FMR.
1)Remove the front panel, then move the power switch to the "OFF" position.
2)Unplug the icemaker from the electrical outlet.
3)Remove the control box cover and access CB.
4)Check the S1 dip switch settings, see "II.C.3.a) Default Dip Switch Settings" to assure that they are in the correct positions. For proper operation of IS, confirm that S1 dip switch 7 is in the "ON" position.
5)Startup – "POWER OK" LED is on. Plug the icemaker into the electrical outlet, then move the power switch to the "ON" position. Move the control switch to the "ICE" position. CB "POWER OK" LED and IS green LED should be on. Diagnosis "POWER OK" LED: CB POWER OK" LED is off. Check for proper supply voltage (115VAC) input to the control transformer. If 115VAC is not present, check the power switch and breaker. Next, check for proper 24VAC outpout voltage from the control transformer. Check CB
26
