The green LED’s
Sequence Step | LED’s on Length: | Min. | Max. | Avg. |
1 Minute Fill Cycle | LED4 |
|
| 60 sec. |
Harvest Cycle | LED1, 4, & 2 | 2 min. | 20 min. | |
Freeze Cycle | LED1 | 5 min. | 60 min. | |
Reverse Pump Out | LED1, 3, & 2 | 10 sec. | 20 sec. | Factory set. |
{LED 1 – Comp; LED 2 - HGV/CFM; LED 3 – PM; | LED 4 - WV} |
| ||
The built in safeties shut down the unit and have alarms as follows:
1 beep every 3 sec. = High Evaporator Temperature >127 ° F.
Check for defrost problem (stuck HGV or relay), hot water entering unit, stuck headmaster, or shorted thermistor.
2 beeps every 3 sec. = Defrost Back Up Timer. Defrost >20 minutes. Orange LED marked 20 MIN energizes.
Check for open thermistor, HGV not opening, TXV leaking by, low charge, or inefficient compressor.
3 beeps every 3 sec. = Freeze Back Up Timer. Freeze > 60 minutes. Yellow LED marked 60 MIN energizes.
Check for F/S stuck closed (up), WV leaking by, HGV leaking by, TXV not feeding properly, low charge, or inefficient compressor.
Machines with mechanical bin control
ONLY
4 beeps every 3 sec. = Short Circuit between the K4 connection on the control board and the bin control relay. Check connections and replace wire harness if necessary.
5 beeps every 3 sec. = Open Circuit between the K4 connection
on the control board and the bin control relay. Check connections and replace wire harness if necessary.
To manually reset the above safeties, depress white alarm reset button with the power supply ON.
6 beeps every 3 sec. = Low Voltage. Voltage is 92 Vac or less.
7 beeps every 3 sec. = High Voltage. Control voltage > 147 Vac ±5%. The red LED will
The voltage safety automatically resets when voltage is corrected.
The Output Test switch “S3” provides a relay sequence test. With power OFF, place S3 ON and switch power to ICE. The correct lighting sequence should be none, 2, 3, 4, 1, & 4, normal sequence every 5 seconds. S3 should remain in the “OFF” position for normal operation.
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