The green LEDs
5 seconds from initial startup as follows:
| Sequence Step | LED | Time LEDs are Lit | ||
| Min. | Max. | Avg. | ||
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| |||
| 1 Minute Fill Cycle | 4 |
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| 60 seconds |
| Harvest Cycle | 1, 4, and 2 | 2 minutes | 20 minutes | 3 to 5 minutes |
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| Freeze Cycle | 1 | 5 minutes | 60 minutes | 30 to 35 minutes |
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| Reverse Pump Out | 1, 3, and 2 | 10 seconds | 20 seconds | factory setting |
{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:
No. of Beeps | Type of Alarm | Notes | |
(every 3 sec.) | |||
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| ||
1 | High Evaporator Temp. | Check for defrost problem (stuck HGV or relay), | |
| (temperature > 127°F) | hot water entering unit, stuck headmaster, or | |
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| shorted thermistor. | |
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| |
2 | Defrost Backup Timer | Orange LED marked 20 MIN lights up. | |
| (defrost > 20 min.) | Check for open thermistor, HGV not opening, TXV | |
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| leaking by, low charge, or inefficient compressor. | |
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| |
3 | Freeze Backup Timer | Yellow LED marked 60 MIN lights up. | |
| (freeze > 60 min.) | Check for F/S stuck closed (up), WV leaking by, | |
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| HGV leaking by, TXV not feeding properly, low | |
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| charge, or inefficient compressor. | |
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| |
4 | Short Circuit | Check connections and replace wire harness if | |
| (between the K4 connection | necessary. | |
| on the control board and the |
| |
| bin control relay) |
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5 | Open Circuit | Check connections and replace wire harness if | |
| (between the K4 connection | necessary. | |
| on the control board and the |
| |
| bin control relay) |
| |
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To manually reset the above safeties, press the white alarm reset button with the power supply on.
6 | Low Voltage |
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| (92Vac or less) |
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7 | High Voltage | Red LED will turn off if voltage protection |
| (control voltage | operates. |
| > 147Vac ±5%) | 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. (The LEDs are not in numerical order on the board. See the diagram on the next page for the location and numbering of LEDs). S3 should remain in the “OFF” position for normal operation.
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