Check a thermistor for resistance by using the following procedure:
1)Disconnect the connector K3 on the board.
2)Remove the thermistor. See "V.H. Removal and Replacement of Thermistor."
3)Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes.
4)Verify the temperature of the glass, then check for resistance between thermistor leads. See the table above for temperature and resistance values. Normal reading is within 3.5 to 7 kΩ. Replace the thermistor if it exceeds the normal reading.
c)Harvest Timer (dip switch 1 & 2)
The harvest timer starts counting when the thermistor reads 48°F (9°C) at the evaporator outlet.
No adjustment is required under normal use, as the harvest timer is adjusted to the suitable position. However, a setting longer than the factory setting may be advised in cases where the flush provided at harvest needs to be prolonged for extra cleaning. Before changing this setting, call the HOSHIZAKI Technical Support Department at
Dip Switch Setting | Time | |
No. 1 | No. 2 | (seconds) |
| ||
OFF | OFF | 60 |
ON | OFF | 90 |
OFF | ON | 120 |
ON | ON | 180 |
d)Pump-Out Timer (dip switch 3 & 4)
When a freeze cycle is completed, the pump motor stops, and the icemaker resumes operation in 2 seconds. Then, during cycles when a pump out is called for, the pump motor drains the water tank for the time determined by the
The
Dip Switch Setting | Time (seconds) | ||
No. 3 | No. 4 | T1 | T2 |
OFF | OFF | 10 | 150 |
ON | OFF | 10 | 180 |
OFF | ON | 10 | 120 |
ON | ON | 20 | 180 |
T1: Time to drain the water tank
T2: Harvest timer at pump out
Pump out always occurs on the 2nd harvest after startup. Then, depending on the pump- out frequency control setting (dip switch 5 & 6), pump out occurs every cycle, or every 2nd, 5th or 10th cycle.
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