Maintenance; Adding Water To Circuit; Diagnostic - Carrier 80HMA Mode D'emploi

Maintenance

Please refer to the Safety information manual.
The equipment should be serviced in order to maintain
performances and reliability.
The product warranty may be invalidated due to wrong or
incomplete maintenance.
The user is not authorized to open the unit or remove any
of its parts.
Any maintenance activity requiring opening of the unit
must be carried out by qualified service personnel.
Carry out the following operations at least once a year:
check the expansion vessel
check parts for wear

Adding water to circuit

This operation can be performed by the user.
It can be performed without opening the unit, using the
filling valve suggested in the hydraulic circuit.
The corrected operating pressure is 1 barg; if the pressure is
lower than 1 barg, it is better to add water in the circuit.
The maximum working pressure is 3 barg, over this pressure

Diagnostic

In case of failure, the icon will blink on display,
depending on the Access Level.
Par. 5 shows the addresses of the failed devices (not own
user interfaces); if more devices are failed, the addresses are
scrolled every 1 second.
Par. 6 of variable table shows the active fault codes (scrolled
every 1 second) for the selected board address and virtual zone.
Error code
2 Safety Input
Enter water Temperature Thermistor
3
(EWT)
Actual Refrigerant Temperature
4
Thermistor BPHE
5 Outdoor Air Thermistor of GMC
6 Loss communication to User Interface
7 User Interface Room Thermistor
9 Flow Switch error / Water Pump
10 EEProm Corrupt
Loss Comm to RS485 (system
13
configuration type=6)
14 Loss of Signal From INVERTER
Exit water Temperature Thermistor
15
(LWT)
16 Alarm test
17 INVERTER Outdoor Air Thermistor (TO)
18 G-Tr short circuit protection
Item
Heat pump
check setpoints and operating points
check safety devices
check electrical connections for tightness
check the earth connections
check for water and refrigerant leaks
check operation and parameters
clean the water filter
check system pressure
clean the condensate tray
activate the Security pressure valve (Ref. 10 pic. 4),
turning the moving part, to remove dirty and check the
normal behavior
the pressure safety valve will open. Verify that expansion
vessels are sufficient for the application. Consider, when the
system is filled, that during the normal heating operation,
the pressure can increase due the water expansion.
NOTE: Par. 6 shows the error referred to the address
selected. If the blinks and no error is shown in the
Par. 6, check on Par. 5 the address of the address in fail,
and select this address on user interface to see the fail
number/s.
System type
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
30AWH communicated by heat pump
Failure when Type
80HMA
B
B
B
A
A
A
B
B
A
B
B
A
A
B
27