Hi,
Excuse the long post but hope to get as much detail in the first post
My son has a Biasi Riva Compact HE (model M96.24SM.C2) which was fitted nearly a year ago and has been running fine until I meddled
When it was installed there was no whole house thermostat so it relied on the TRV's in each room but it meant the boiler was always on an cycling and the cost of gas these days is a concern. Also it is in the airing cupboard which isn't easy for them to get to for changing the programmer.
From the manual I noted that a thermostat could be installed so I added a Centaurstat 7 day programmer. This was wired into the external controls panel by 2 wires to the inner and outer links. Removing the existing link. The boiler programmer was then switched to permanently on.
This worked fine for about a week but then they started having a problem with the boiler locking out which they didn't tell me but kept resetting. Now the boiler is dead.
I went to take a look last night and think I can see what has happened. When I pushed the control panel back into the boiler having wired the thermostat up one of the ignition electrode wires seperated at the joint.
The boiler has been running like this for a while and I have a suspicion that something in the ignition has been buggered as a result.
The boiler is currently doing the following.
Reset the lockout with it calling for heat via CH. The fan starts up and the circulation pump. The ignition electrodes start sparking and the gas does actually fire up and ignite. It burns for maybe 10-15 seconds before it all shuts back down again. Error lights are 2 outside green lights flashing. Middle light red and lockout light on. Manual suggests no ignition signal from the full sequence ignition device.
Kinda hoping it is just the flame detection electrode or has the wayward spark voltage made it's way to and destroyed the PCB?? Or has running it with one electrode disconnected done the damage? I measured the voltage on the detection electrode when it was firing up which showed .5V DC at peak. Is this normal? Any suggestions?
Thanks
Paul M
Excuse the long post but hope to get as much detail in the first post
My son has a Biasi Riva Compact HE (model M96.24SM.C2) which was fitted nearly a year ago and has been running fine until I meddled
When it was installed there was no whole house thermostat so it relied on the TRV's in each room but it meant the boiler was always on an cycling and the cost of gas these days is a concern. Also it is in the airing cupboard which isn't easy for them to get to for changing the programmer.
From the manual I noted that a thermostat could be installed so I added a Centaurstat 7 day programmer. This was wired into the external controls panel by 2 wires to the inner and outer links. Removing the existing link. The boiler programmer was then switched to permanently on.
This worked fine for about a week but then they started having a problem with the boiler locking out which they didn't tell me but kept resetting. Now the boiler is dead.
I went to take a look last night and think I can see what has happened. When I pushed the control panel back into the boiler having wired the thermostat up one of the ignition electrode wires seperated at the joint.
The boiler has been running like this for a while and I have a suspicion that something in the ignition has been buggered as a result.
The boiler is currently doing the following.
Reset the lockout with it calling for heat via CH. The fan starts up and the circulation pump. The ignition electrodes start sparking and the gas does actually fire up and ignite. It burns for maybe 10-15 seconds before it all shuts back down again. Error lights are 2 outside green lights flashing. Middle light red and lockout light on. Manual suggests no ignition signal from the full sequence ignition device.
Kinda hoping it is just the flame detection electrode or has the wayward spark voltage made it's way to and destroyed the PCB?? Or has running it with one electrode disconnected done the damage? I measured the voltage on the detection electrode when it was firing up which showed .5V DC at peak. Is this normal? Any suggestions?
Thanks
Paul M