U
uniquewater
Hi, My customer has a vaillant ecomax 622/2e boiler. Since doing a powerflush 2 weeks ago the boiler has recently been making knocking noises and not heating radiators.
the pressure is 1.2, no air in the system or pump. When boiler is first started it fires up heating up to 65 /70 degrees then starts to modulate down until not burning at all. Flow pipe about 1 metre away from boiler gets hot return stays cold. could this be a pump issue? The boiler is not showing any fault codes. Someone had mentioned the black flexi hose can cause problems. I'm going to strip it down Monday but wondered if it was something simple that I have missed. Help / ideas would be much appreciated.
Cheers
Lee
gsr 555497
the pressure is 1.2, no air in the system or pump. When boiler is first started it fires up heating up to 65 /70 degrees then starts to modulate down until not burning at all. Flow pipe about 1 metre away from boiler gets hot return stays cold. could this be a pump issue? The boiler is not showing any fault codes. Someone had mentioned the black flexi hose can cause problems. I'm going to strip it down Monday but wondered if it was something simple that I have missed. Help / ideas would be much appreciated.
Cheers
Lee
gsr 555497