Carrier 80AWX Series - Adding Water to the Circuit; Diagnostics

32
English
80AWX- 80AWH
Maintenance
This operation can be performed by the user.
For safety reason, do not open the indoor or outdoor unit.
The corrected operating pressure is 1 bar; if the pressure is
lower than 1 bar, it is necessary to add water in the circuit.
See Fig. 2 and 3
open the lling valve•
close the lling valve when the water pressure reaches 1 •
bar (check the manometer).
In case of system failure, the alarm icon (
) will light up
on the user interface.
Failures are identied by a fault code.
Active fault codes will be displayed in sequence, with a
change rate of 1 second.
Adding water to the circuit
Diagnostics
Error
code
Item Failure when Consequences Diagnostics and solutions
Hydronic module fault codes
3 TWB Value out of range Backup heaters are OFF
Check sensor, wiring and electrical
connections
4 TC Value out of range
Outdoor unit stops
Domestic water valve OFF if code
127=1
Check sensor, wiring and electrical
connections
5
Domestic
hot water
temperature
sensor
Value out of range
+
Code 133=1 or 2
Booster heater OFF
Disinfection function not performed
Check sensor, wiring and electrical
connections
6
Communication
with user
interface
(conneted
to W-C-G-Y
terminal blocks)
Communication
lost
"No communication between unit and
interface.
Room temperature and humidity are
not available if code 105.0=1 or 4 or
105.1=1 or 4.
Unit runs with values stored in
memory"
Check wiring and connections
7
Communication
with additional
user interface
(connected to
Rc-Rh-G2-Y2
terminal blocks)
Communication
lost
+
Code 105.0=1 or/
and
105.1=1
No communication between unit and
interface.
Room temperature and humidity are
not available
Unit runs with values stored in
memory
Check wiring and connections
8 Flowswitch
Water pump is
OFF.
Flowswitch
detetects ow
Outdoor unit, backup heaters,
domestic water valve, water pump:
OFF
Check setting of code 106.1
Check owswitch.
9 Flowswitch
Water pump is ON.
Flowswitch
detects no ow.
Outdoor unit, backup heaters,
domestic water valve, water pump:
OFF
Check setting of code 106.0
Check owswitch, wiring and
electrical connections.
Check oor heating thermal cut o if
connected
If reset is needed, press the red
button and check climatic curve
settings (codes 133 to 144).
10 EEProm EEProm is currupt Entire system stops Replace board
11
Communication
Master - Slave
Communication
lost
+
Code 100=2
Entire system stops