Hoshizaki HFE-140B Series, Service Manual

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8
4. ELECTRONIC CONTROLS
[a] SET POINT TEMPERATURE (mean temperature
between compressor ON and OFF temperatures)
Off-cycle defrost (HRE series): 0 to +16°C
Heater defrost (HRE-F series): -6 to +12°C
Heater defrost (HFE series): -25 to -7°C
[b] CABINET TEMPERATURE DIFFERENTIAL
3.7 K (from “set point temp - 2.0 K” to “set point temp + 1.7 K”)
Note: On the Controller Board only. Actual differential may be 4 - 6 K.
[c] DEFROST CYCLE
Every 6 hours (from the beginning of a cycle to the beginning of the next cycle)
[d] DEFROST COMPLETION TEMPERATURE
Off-cycle defrost (HRE series): +3°C
Heater defrost (HRE-F series): +30°C
Heater defrost (HFE series): +20°C
[e] TEMPERATURE DISPLAY CYCLE
The Temperature Display Window renews its cabinet temperature display every 30
seconds. The display remains the same for 30 seconds even if the actual temperature
changes in the meantime. During a defrost cycle, the Temperature Display Window
indicates “dF”.
Set Point Temperature
Interior
Thermistor
Temperature
3.7 K
Compressor
ON
OFF
Time