Alarm reset: turn the unit off and on again.
NOTE
-
Before resetting an alarm, identify and remove the
cause generating that.
-
Repeated resets can cause irreversible damage.
Master unit
If the Master unit’s power supply is disconnected, all of
the group’s units stop.
The unit is in protection in the following conditions:
•
High pressure or outlet temperature protection
•
low voltage
•
compressor current protection
•
Frequency protection of the compressor
•
High condenser temperature
•
High temperature difference between flow and return
•
Frost protection
•
Malfunction of the outlet temperature sensor
•
Low evaporator temperature
•
frequency protection by voltage
•
compressor inverter malfunction
•
fan motor protection
•
water return high temperature, in cooling
•
Low pressure with frost protection
•
high temperature of inverter compressor module
When the unit fails or is in protection, the water pump
continues working (except for water flow alarm, voltage
protection, phase sequence protection).
When the master unit is in protection, only the master unit
stops and the other units carry on working.
When a slave unit is in protection, this unit stops and the
other units are not involved.
If the master unit fails, the slave units also stop working.
Temperature sensors
All temperature sensors are classed as faulty when the
voltage on the corresponding input is lower than 0.05 V
or higher than 4.95 V.
After an error has been signalled, all units stop. The error
is cleared after the sensor is replaced.
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