24 7219722 - 01 (04/15)
8 Troubleshooting
MainEco Heat
8.2 Fault Finding
1. If the boiler is not working, check section 5.1 Operation Checking Procedure & Basic Fault
Identification or the fault finding table. Contact your Installer.
Problem
There is no domestic hot water
and/or the radiators are cold.
The boiler is not working.
The domestic hot water is not
hot enough.
The radiators are not hot
enough.
Possible Causes
Check that the boiler is being supplied with power
(all controls set to ON).
Check the fuses and the switches.
If possible check whether the gas cock is properly
open.
If the property has a prepayment meter ensure it
has sufficient credit.
Check if the Fault - Lock-out is illuminated. See
Section 8.1 to reset.
The boiler temperature setting is below the
cylinder thermostat setting.
The radiator valves are not open.
The temperature set point for the heating is too
low (check boiler & room thermostat).
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