pyotr
Member
Hello,
Just got the chance to revisit apartment to try replacing our old Honeywell gas control valve (GCV) with the new replacement on our Bradford White U440T6FRN.
There are some differences between old GCV (WV8860Q 1000) and new replacement ("415-52915-01"), one of them seems to be (missing?) port for the inner chamber door temperature sensor connector.
Referring to https://s3.amazonaws.com/bradfordwh..._prior_naeca_archive_servicemanual_47132a.pdf:
- Page 7 (of 28) shows a picture of the "Chamber Door Temperature Sensor" on the water heater's right inner chamber door.
- Page 18 (of 28) shows a picture of the "Chamber Door Temperature Sensor Wire Harness" where the 2 wires from the above plug into the old GCV.
The new replacement "415-52915-01" GCV only has (electrical) ports for the thermopile and "COM". Under the "COM" label, there are 3 openings: one is for a 6-pin (2x3) molex and other two just expose control logic board edge copper connectors.
We're at a loss as to where the chamber door temperature sensor wires are to be connected to on the replacement "415-52915-01" GCV?
Without that sensor connected to the replacement GCV, about 30 seconds after pilot light lit up (which remained lit after taking thumb off knob), the Status LED immediately flashed six times, still in Pilot mode, before burner even kicked in, yet. Turning the knob clockwise to one of the temperature settings didn't cause the burner to start.
According to Page 6 (of 28) of that same PDF:
The sensor wires aren't connected, i.e., open, so electrical "short" doesn't seem to apply for our case but #1 seems on target as to the cause of the six flashes. Maybe there are points on the PCB that the sensor wires can be soldered on.
When the old GCV was temporarily reconnected, burner is confirmed to still be working/burning.
The finish line seems to be in sight, just missing this one info. Help, please.
Thank you for any help + ideas + pointers!
Just got the chance to revisit apartment to try replacing our old Honeywell gas control valve (GCV) with the new replacement on our Bradford White U440T6FRN.
There are some differences between old GCV (WV8860Q 1000) and new replacement ("415-52915-01"), one of them seems to be (missing?) port for the inner chamber door temperature sensor connector.
Referring to https://s3.amazonaws.com/bradfordwh..._prior_naeca_archive_servicemanual_47132a.pdf:
- Page 7 (of 28) shows a picture of the "Chamber Door Temperature Sensor" on the water heater's right inner chamber door.
- Page 18 (of 28) shows a picture of the "Chamber Door Temperature Sensor Wire Harness" where the 2 wires from the above plug into the old GCV.
The new replacement "415-52915-01" GCV only has (electrical) ports for the thermopile and "COM". Under the "COM" label, there are 3 openings: one is for a 6-pin (2x3) molex and other two just expose control logic board edge copper connectors.
We're at a loss as to where the chamber door temperature sensor wires are to be connected to on the replacement "415-52915-01" GCV?
Without that sensor connected to the replacement GCV, about 30 seconds after pilot light lit up (which remained lit after taking thumb off knob), the Status LED immediately flashed six times, still in Pilot mode, before burner even kicked in, yet. Turning the knob clockwise to one of the temperature settings didn't cause the burner to start.
According to Page 6 (of 28) of that same PDF:
The sensor wires aren't connected, i.e., open, so electrical "short" doesn't seem to apply for our case but #1 seems on target as to the cause of the six flashes. Maybe there are points on the PCB that the sensor wires can be soldered on.
When the old GCV was temporarily reconnected, burner is confirmed to still be working/burning.
The finish line seems to be in sight, just missing this one info. Help, please.
Thank you for any help + ideas + pointers!
