My parents just finished getting their new house (double wide modular) built after suffering from a house fire. It's starting to get colder, so they attempted to turn in the furnace. To their surprise, it doesn't work.
It goes through the cycle, it lights, and sometimes it'll stay running for a few minutes, sometimes for only a few seconds, and immediately turns right back off. We've watched the cycle and it's in fact lighting and all burner chambers are igniting. It just immediately turns right back off. The blower turns on after the flame goes out, so it's not entirely shutting down the system.
It's an electric ignition with a single stage gas valve.
Gas is getting to the unit and all the other gas appliances in the home work.
While it's doing it, the gas valve clicks continually in and off until it finally turns off and had to be reset.
No diagnostics lights, and according to the manual the lights that are on it indicate normal operation. There's an orange flame light that comes on and stays on when it's ignited, but it turns off as soon as the burners stop even with the blower still running.
This is a brand new furnace (and home) and the installers and mobile home manufacturers are giving them the run around with repairing it, and the local hvac installers won't touch it because of the "warranty" on it, and want my parents to pay full price up front for the diagnostics and repair before doing any of the warranty work. It's getting cold, they are both retired and disabled, and need to get heat into their house soon before it gets to freezing weather.
We thought maybe it was the flame sensor because it does actually ignite for however long, so we ordered the replacement part since it was only 7$, but it didn't fix it.
It's an intertherm m7r mobile home furnace.
Any advice would be appreciated. We understand the danger of working on furnaces, and I'm more than capable of dealing with electrical diagnostics as far as reading values with oh meters etc as long as I'm guided in the right direction to what I'm looking for. Not looking to do any unsafe stuff like disassembling the gas valve etc but want to do as much testing as possible to try and save them some money before needing to fork over hundreds die something that should be covered by a warranty.
It goes through the cycle, it lights, and sometimes it'll stay running for a few minutes, sometimes for only a few seconds, and immediately turns right back off. We've watched the cycle and it's in fact lighting and all burner chambers are igniting. It just immediately turns right back off. The blower turns on after the flame goes out, so it's not entirely shutting down the system.
It's an electric ignition with a single stage gas valve.
Gas is getting to the unit and all the other gas appliances in the home work.
While it's doing it, the gas valve clicks continually in and off until it finally turns off and had to be reset.
No diagnostics lights, and according to the manual the lights that are on it indicate normal operation. There's an orange flame light that comes on and stays on when it's ignited, but it turns off as soon as the burners stop even with the blower still running.
This is a brand new furnace (and home) and the installers and mobile home manufacturers are giving them the run around with repairing it, and the local hvac installers won't touch it because of the "warranty" on it, and want my parents to pay full price up front for the diagnostics and repair before doing any of the warranty work. It's getting cold, they are both retired and disabled, and need to get heat into their house soon before it gets to freezing weather.
We thought maybe it was the flame sensor because it does actually ignite for however long, so we ordered the replacement part since it was only 7$, but it didn't fix it.
It's an intertherm m7r mobile home furnace.
Any advice would be appreciated. We understand the danger of working on furnaces, and I'm more than capable of dealing with electrical diagnostics as far as reading values with oh meters etc as long as I'm guided in the right direction to what I'm looking for. Not looking to do any unsafe stuff like disassembling the gas valve etc but want to do as much testing as possible to try and save them some money before needing to fork over hundreds die something that should be covered by a warranty.
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