OPERATING AND MAINTENANCE MANUAL
Chapter 7 - Electronic controller
iC 215 ÷ iC 780
40
The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited
ENGLISH
EN
7.11.7 High pressure switch alarm and/or compressor thermal alarm
(iC 640÷780 models only)
7.11.8 Low pressure switch alarm
7.11.9 High pressure
7.11.10 Low pressure
7.11.11 Anti-freeze alarm
The anti-freeze alarm is reset automatically. It switches to manual reset after 3 trips/hour.
With the unit in Stand-by or OFF the anti-freeze alarm message is tripped in reference to the chiller and heat pump setpoints.
Display labels meaning b1HP (circuit 1 high pressure digital input) and/or compressor thermal alarm
b2HP (circuit 2 high pressure digital input) and/or compressor thermal alarm
Cause of trip With unit in ON status and circuit high pressure switch input active and/or
compressor thermal alarm
Reset Input inactive
Reset Reset is always manual
Icon Flashing E
Action Alarm relay + buzzer activated
Display labels meaning b1LP (circuit 1 low pressure digital input)
b2LP (circuit 2 low pressure digital input)
Cause of trip With low pressure switch input of active circuit
The alarm is not signalled:
1. On compressor starting for time AL01
2. If time AL64 from activation of the digital input has not elapsed
Reset Input deactivation
Reset Automatic - becomes manual after AL05 trips / hour (reset procedure in
functions menu)
Icon Flashing E
Action Alarm relay + buzzer activated
Display labels meaning b1hP (circuit 1 high pressure analogue input)
b2hP (circuit 2 high pressure analogue input)
Cause of trip Condensing control probe detects value > set AL09
Reset Condensing control probe detects value < set AL09 - differential AL10
Reset Reset is always manual
Icon Flashing E
Action Alarm relay + buzzer activated
Display labels meaning b1lP (circuit 1 low pressure analogue input)
b2lP (circuit 2 low pressure analogue input)
Cause of trip The alarm is generated when the evaporation pressure alarm reads a pressure
value < set AL03
When the compressor is started the alarm is not generated for time AL01.
Reset If the evaporation control probe measures pressure > set AL03 + differential
AL04
Reset Automatic - becomes manual after AL05 trips / hour (reset procedure in
functions menu)
Icon Flashing E
Action Relay + buzzer activated
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