MAXA i-HPV5H 0140, Manual

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Controllo per i-HPV5
Chillers and Inverter Air/Water heat pumps with axial fan
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24.6 [E801] INVERTER TIMEOUT
When the on-board control does not communicate with the compressor driver board, a time-out alarm is activated to avoid losing control of
the system.
24.7 [E851 ÷E971] INVERTER ALARMS
These alarms are related to the compressor driver, each model has its own list of alarms.
24.8 [E00] REMOTE ON/OFF SIGNALLING
This message appears on the display when the remote on/off contact is open.
24.9 [E001] HIGH PRESSURE
The alarm is activated when the pressure transducer on board the machine detects a pressure higher than
41,5 bar
, in which case the compres-
sor is immediately blocked. The alarm is reset automatically when the pressure drops below 32,5 bar ; if it occurs more than 3 times per hour the
alarm becomes a manual reset.
24.10 [E002] LOW PRESSURE
In chiller mode, the alarm is active if the pressure transducer on board the machine detects a pressure lower than 3,5 bar . In heat pump mode,
the alarm is active if the pressure transducer on board the machine detects a pressure of less than 1,3 bar . Each time the compressor is activat -
ed, a bypass time of 60 seconds is counted. When the alarm is active, the circuit compressor is blocked. The alarm is automatically reset when
the pressure rises 2,0 bar above the intervention threshold; if the number of interventions in one hour is 3, the alarm becomes manual reset.
24.11 [E008] DRIVER LIMITATION
If the compressor does not reach the speed at the expected ramp value within 30 minutes, the alarm becomes active and the compressor is
switched off for safety. If the number of alarm interventions in one hour is 3, the alarm becomes manual reset.
24.12 [E041] 4-WAY VALVE
This alarm identifies a malfunction of the 4-way valve for reversing and is manual reset. The alarm is not active for a bypass time of approximately
180 seconds from the start of the compressor.
In heating or DHW mode, after the bypass time has expired, the alarm is active when the water flow temperature is lower than the water return
temperature - 1°C.
In cooling mode, after the bypass time has elapsed, the alarm is active when the water flow temperature is higher than the water return tem -
pe 1°C.
24.13 LACK OF VOLTAGE
If the power supply fails, when it is restored the unit goes back to the state before the power failure.
NOTE:
• If a defrosting cycle is in progress, the procedure is cancelled.
• All the timings in progress are cancelled and reinitialised.
24.14 UTILITIES BLOCK ALARM TABLE
Alarm code DESCRIPTION Block
E00
Remote off Machine
E001
High pressure alarm Machine
E002
Low pressure alarm Machine
E005
Antifreeze alarm Machine
E006
No flow alarm Machine
E008
Compressor driver limitation alarm Machine
E009
High discharge temperature alarm Compressor
E018
High temperature in cooling mode alarm Machine
E041
Incongruent temperature alarm Machine
E611
Water inlet probe failure Machine
E621
Water outlet probe failure Machine
E631
Compressor suction probe failure Machine
E641
Compressor discharge probe failure 1 / high pressure switch intervention Machine
E651
External air / fan thermal probe failure Machine
E661
Compressor discharge probe failure 2 / high pressure switch trip Machine
E681
Sanitary/remote system probe failure Machine
E691
Low pressure transducer failure Machine
E701
High pressure transducer failure Machine
E711
Fault in voltage input 0-10V DC Machine
*E652
Gas probe failure DS DS