Folks, this one is bleeding me out of cash, time and energy and some advice would be very much appreciated.
Buderus GB 142-45 installed September 2009. Three zones controlled by zone valves, individual Honeywell thermostats and an AM10 module. The circulator pump had been wired directly to the boiler with no relay switch. While having some routine plumbing work done, a Buderus-certified plumber said that the pump was wired incorrectly and a relay switch was needed. OK, fine, I paid to have him install one. All hell broke loose.
The boiler starts and runs fine after power has been turned off and then turned on. However, after the initial heat cycle and the three zones have come up to temp, the boiler will not respond to heat calls from any of the thermostats. The zone valves open in response to a heat call but the boiler will not respond and no error codes are flashed. The relay switch was replaced and the AM10 was disconnected to see if either of those were the problem. Nope, same thing.
I'm more than a bit ticked off that this boiler worked perfectly for 10 years and is now malfunctioning after it was supposedly "fixed". The tech is certified for Buderus boilers but he has no idea what is going on. It takes 30 minutes minimum to get through to Buderus tech support. Any advice would be VERY much appreciated, thanks.
Buderus GB 142-45 installed September 2009. Three zones controlled by zone valves, individual Honeywell thermostats and an AM10 module. The circulator pump had been wired directly to the boiler with no relay switch. While having some routine plumbing work done, a Buderus-certified plumber said that the pump was wired incorrectly and a relay switch was needed. OK, fine, I paid to have him install one. All hell broke loose.
The boiler starts and runs fine after power has been turned off and then turned on. However, after the initial heat cycle and the three zones have come up to temp, the boiler will not respond to heat calls from any of the thermostats. The zone valves open in response to a heat call but the boiler will not respond and no error codes are flashed. The relay switch was replaced and the AM10 was disconnected to see if either of those were the problem. Nope, same thing.
I'm more than a bit ticked off that this boiler worked perfectly for 10 years and is now malfunctioning after it was supposedly "fixed". The tech is certified for Buderus boilers but he has no idea what is going on. It takes 30 minutes minimum to get through to Buderus tech support. Any advice would be VERY much appreciated, thanks.