How to fix all indicators off on EHC Comet Combi 14.4kW Boiler?
If all indicators on the control panel of your EHC Boiler are off, it indicates that there is no power to the boiler. You should check that the WT3 thermal cut-out has power at the top and bottom connections. If the WT3 has tripped, investigate why this device has tripped.
Why is the G indicator off on my EHC Boiler?
If the 'G' indicator is off on your EHC Boiler, it means there is no call for heat or no signal from the zone valve. Check that the programmer and room stats are calling for heat and that zone valves are operating correctly.
How to troubleshoot H indicator flashing on EHC Comet Combi 14.4kW?
If the 'H' indicator is flashing on your EHC Boiler, it could be due to several reasons: * The pump is not running: Turn the power off to the boiler and manually turn the pump by pushing and twisting the screw on the front of the pump head. * The pump is running but there is not enough flow: Check and clean the magnetic filter. Ensure the minimum flow rate is at least 8 liters per minute. * The pump is running but there is zero flow: Replace the flow sensor.
What does a flashing A indicator mean on an EHC Comet Combi 14.4kW?
A flashing 'A' indicator on your EHC Boiler can indicate insufficient pressure (below 0.5 bar) or a sensor failure. Increase the system pressure to 1.5 bar. If the problem persists, replace the pressure sensor.
What does G indicator flashing mean on EHC Comet Combi 14.4kW?
If the 'G' indicator is flashing on your EHC Boiler, it indicates that the master appliance or shower sensors are operating with a NA open circuit. Check that the master appliance or shower sensors are working correctly.
What does K indicator flashing mean on EHC Boiler?
If the 'K' indicator is flashing on your EHC Boiler, it indicates a return sensor failure. Check the sensor and replace it as necessary.
What does L indicator flashing mean on EHC Boiler?
If the 'L' indicator is flashing on your EHC Boiler, it indicates a flow sensor failure. Check the sensor and replace it as necessary.
What does EE message on display mean on EHC Comet Combi 14.4kW?
If you see an 'EE' message on the display of your EHC Boiler, it means there is a data error. Replace the PSK6.
Details on recommended electrical protection, wiring regulations, and RCD/MCB ratings.
Steps for filling and purging both the hot water and primary heating circuits.
Details on system protection, cleaning, flushing with Fernox F3, and using F1 inhibitor.
Instructions for commissioning the Grundfos UPM3 pump, including mode settings, alarm indicators, and troubleshooting.
Explanation of control panel indicators, their status (on, off, flashing), and corresponding operating details.
Guide to switching the boiler on/off, setting system and hot water temperatures, and checking flow rate.
Procedures for checking expansion relief valve, P/T relief valve, and cylinder thermostat operation.
Instructions for cleaning mesh filters, magnetic filters, and checking system pressures.
To Next Page
General
