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-   -   Cant figure this out! Not getting 24v at the board or thermostat (http://www.houserepairtalk.com/f8/cant-figure-out-not-getting-24v-board-thermostat-15669/)

jayrod 03-09-2013 07:22 AM

5 Attachment(s)

Sorry for the late reply It didnt notify me by email like it was and I thought you guys gave up on me. I should be fine working on it. I have fixed it numerous times over the years but this time Im not sure what the problem is. Heres pics of the handler inside the house. If you need more, let me know.


jayrod 03-09-2013 07:22 AM

5 Attachment(s)

Sorry for the late reply It didnt notify me by email like it was and I thought you guys gave up on me. I should be fine working on it. I have fixed it numerous times over the years but this time Im not sure what the problem is. Heres pics of the handler inside the house. If you need more, let me know.


jayrod 03-09-2013 07:22 AM

5 Attachment(s)

Sorry for the late reply It didnt notify me by email like it was and I thought you guys gave up on me. I should be fine working on it. I have fixed it numerous times over the years but this time Im not sure what the problem is. Heres pics of the handler inside the house. If you need more, let me know.


jayrod 03-09-2013 07:22 AM

5 Attachment(s)

Sorry for the late reply It didnt notify me by email like it was and I thought you guys gave up on me. I should be fine working on it. I have fixed it numerous times over the years but this time Im not sure what the problem is. Heres pics of the handler inside the house. If you need more, let me know.


jayrod 03-09-2013 07:22 AM

5 Attachment(s)

Sorry for the late reply It didnt notify me by email like it was and I thought you guys gave up on me. I should be fine working on it. I have fixed it numerous times over the years but this time Im not sure what the problem is. Heres pics of the handler inside the house. If you need more, let me know.


jayrod 10-28-2013 04:52 PM

4 Attachment(s)

Okay I made some progress. I unscrewed the thermostat board and looked at the solder points on the back and one of the main ones that feeds the Transformer is burned up. The solder point is burned, looks like its not making a connection. The wire that goes to the burned solder point is the black main power wire coming into the house that goes to the heat sequencer, and then goes to the board labeled HEATER, and that's where the burned solder point is.

More general pics of what the unit looks like are on page 2.

The first pic is where the main power (black) wire comes into the house and splits into 3 wires going into the sequencer.

The 2nd pic shows the front of the board, and the HEATER connection. That's where the black wire leads to at this point. I had the whole connector unplugged at that point.

The 3rd pic shows the back of the board, and the burned connection. That connection feeds the T3 terminal that the Transformer plugs into to get 240 Volts, and also looks to feed the M2 part of the motor which I assume is where it gets its 240 volts. So what would cause the burned solder point?? Do I need a whole new board or can I just clean and resolder?

The 4th pic just shows the whole back view of the board.

Edit - Just had a thought. Since the blown point only leads to 2 connectors (T3 and M2), why cant I just bypass the board all together and connect the black wire to T3 and M2 at the same time? That would bypass the board and the burned solder point. Wouldn't that work?


jayrod 10-28-2013 04:52 PM

4 Attachment(s)

Okay I made some progress. I unscrewed the thermostat board and looked at the solder points on the back and one of the main ones that feeds the Transformer is burned up. The solder point is burned, looks like its not making a connection. The wire that goes to the burned solder point is the black main power wire coming into the house that goes to the heat sequencer, and then goes to the board labeled HEATER, and that's where the burned solder point is.

More general pics of what the unit looks like are on page 2.

The first pic is where the main power (black) wire comes into the house and splits into 3 wires going into the sequencer.

The 2nd pic shows the front of the board, and the HEATER connection. That's where the black wire leads to at this point. I had the whole connector unplugged at that point.

The 3rd pic shows the back of the board, and the burned connection. That connection feeds the T3 terminal that the Transformer plugs into to get 240 Volts, and also looks to feed the M2 part of the motor which I assume is where it gets its 240 volts. So what would cause the burned solder point?? Do I need a whole new board or can I just clean and resolder?

The 4th pic just shows the whole back view of the board.

Edit - Just had a thought. Since the blown point only leads to 2 connectors (T3 and M2), why cant I just bypass the board all together and connect the black wire to T3 and M2 at the same time? That would bypass the board and the burned solder point. Wouldn't that work?


jayrod 10-28-2013 04:52 PM

4 Attachment(s)

Okay I made some progress. I unscrewed the thermostat board and looked at the solder points on the back and one of the main ones that feeds the Transformer is burned up. The solder point is burned, looks like its not making a connection. The wire that goes to the burned solder point is the black main power wire coming into the house that goes to the heat sequencer, and then goes to the board labeled HEATER, and that's where the burned solder point is.

More general pics of what the unit looks like are on page 2.

The first pic is where the main power (black) wire comes into the house and splits into 3 wires going into the sequencer.

The 2nd pic shows the front of the board, and the HEATER connection. That's where the black wire leads to at this point. I had the whole connector unplugged at that point.

The 3rd pic shows the back of the board, and the burned connection. That connection feeds the T3 terminal that the Transformer plugs into to get 240 Volts, and also looks to feed the M2 part of the motor which I assume is where it gets its 240 volts. So what would cause the burned solder point?? Do I need a whole new board or can I just clean and resolder?

The 4th pic just shows the whole back view of the board.

Edit - Just had a thought. Since the blown point only leads to 2 connectors (T3 and M2), why cant I just bypass the board all together and connect the black wire to T3 and M2 at the same time? That would bypass the board and the burned solder point. Wouldn't that work?


jayrod 10-28-2013 04:52 PM

4 Attachment(s)

Okay I made some progress. I unscrewed the thermostat board and looked at the solder points on the back and one of the main ones that feeds the Transformer is burned up. The solder point is burned, looks like its not making a connection. The wire that goes to the burned solder point is the black main power wire coming into the house that goes to the heat sequencer, and then goes to the board labeled HEATER, and that's where the burned solder point is.

More general pics of what the unit looks like are on page 2.

The first pic is where the main power (black) wire comes into the house and splits into 3 wires going into the sequencer.

The 2nd pic shows the front of the board, and the HEATER connection. That's where the black wire leads to at this point. I had the whole connector unplugged at that point.

The 3rd pic shows the back of the board, and the burned connection. That connection feeds the T3 terminal that the Transformer plugs into to get 240 Volts, and also looks to feed the M2 part of the motor which I assume is where it gets its 240 volts. So what would cause the burned solder point?? Do I need a whole new board or can I just clean and resolder?

The 4th pic just shows the whole back view of the board.

Edit - Just had a thought. Since the blown point only leads to 2 connectors (T3 and M2), why cant I just bypass the board all together and connect the black wire to T3 and M2 at the same time? That would bypass the board and the burned solder point. Wouldn't that work?



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