Worcester Greenstar Comfort I RF, Инструкция по установке и эксплуатации, Страница: 19 / 24

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Troubleshooting
Comfort I– 6720810964 (2014/07)
7 Troubleshooting
7.1 Temperature related faults
7.2 Room thermostat/Programmer related faults
7.2.1 Room thermostat
Faults are displayed alternating with the current room temperature.
7.2.2 Programmer/Receiver
Faults will be display alternating between the fault code and the cause code
Problem Cause Remedy
The required room
temperature has not been
achieved. Airlock Bleed the radiators and vent the heating system.
Low system pressure Top up the system pressure via the filling link
Time program Is the heating on for long enough
Flow temperature Set a higher flow temperature
Thermostat valve in reference room Operate the TRV to ensure that it does not stick
Fully open the TRV
The room temperature is higher
that the set value Check the Room thermostat location
refer to section 3.5 Move the Room thermostat to a more suitable location
Fault
code
Cause
code Problem Description Remedy
A21 1001 No RF signal All units powered and not showing low
battery symbol Check signal strength and reposition
Room thermostat for better signal
A22 1002 No RF signal or pairing
fault All units powered and not showing low
battery symbol Repeat pairing
A23 1003 Room stat internal sensor
failure Internal room temperature sensor out of
valid range Replace RF Room thermostat
A24 1004 Remote RF unit has a fault Another room thermostat in the system has a
problem
Check other room thermostats within
the system for fault codes
A27 1007 Unable to communicate
with boiler’s EMS bus Boiler is EMS compatible but no
communication Replace EMS interface
A28 1008 Not paired Unit is not paired Unpair and pair all
Blank display or low battery symbol Batteries are spent Replace batteries
Fault
code
Cause
code Problem Description Remedy
A21 1001 No RF signal All units powered and not showing low
battery symbol Check signal strength and reposition Room
thermostat for better signal
A22 1002 No RF signal or pairing fault All units powered and not showing low
battery symbol Repeat pairing
A24 1004 Remote RF unit has a fault A Room thermostat in the system has
a fault Check room thermostats within the system
for fault codes
A27 1007 Unable to communicate with
boiler’s EMS bus Boiler is EMS compatible but no
communication Replace EMS interface
A28 1008 Not paired Unit is not paired Unpair and pair all
Blank display No connection to EMS bus Ensure EMS unit is connected properly