np369
New Member
Hi,
I have a one year old Weil McLain Eco 155 gas boiler. It is constantly cycling through prepurge, ignition, heating (lasting about 10 secs), postpurge, prepurge, ignition..... every time it starts fire, it lasts only about 10 secs, and the flame signal is below 100, and then it shuts off the fire, restarts the cycle again.
We did exchange almost all parts (we have an identical unit next to it), and all parts seem function well.
At one point we took almost everything apart and put back, it worked for a while, but it returned to same behavior again. Since it constantly cycles through, I can smell incomplete burning gas smell from external exhaustion pipe.
Any advice would be very much appreciated.
I have a one year old Weil McLain Eco 155 gas boiler. It is constantly cycling through prepurge, ignition, heating (lasting about 10 secs), postpurge, prepurge, ignition..... every time it starts fire, it lasts only about 10 secs, and the flame signal is below 100, and then it shuts off the fire, restarts the cycle again.
We did exchange almost all parts (we have an identical unit next to it), and all parts seem function well.
At one point we took almost everything apart and put back, it worked for a while, but it returned to same behavior again. Since it constantly cycles through, I can smell incomplete burning gas smell from external exhaustion pipe.
Any advice would be very much appreciated.