Hello, and thanks in advance for reading.
We're firing up our hot tub after some time without it and are running into some problems.
First was E05, so I replaced the stack flue sensor.
While doing so I found that our heater has been invaded by rodents with the usual detritus everywhere and the wires to the stack flue sensor had been chewed through.
I repaired the wires and the E05 went away.
I also cleaned out the junk and inspected the remaining wires and was unable to find any additional damaged wires.
Now the heater will not ignite.
* The blower spins up, the orange LED lights up and flashes. When the ignition fails the LED goes off.
* When the blower spins up and fails to ignite there is a scent of gas.
* This cycle repeats three times and then the red SERVICE HEATER LED lights up on the front panel.
* I replaced the HSI ignitor without effect.
* I measured 120V to the ignitor leads on ignition attempt.
* There are no lit LEDs on the control panel except for SERVICE HEATER.
* I found some damage to the orifice air kit which includes the hole having been widened by the rodents.
* I inspected the gas orifice and it is not clogged.
* None of the clear tubing between the regulator/valve, orifice, and control board has been damaged.
* There appears to be no rodent intrusion into the main control panel area, and the wires appear to be intact.
At this point I am down to two additional lines of troubleshooting:
1. Somehow the gas pressure has diminished to the point of insufficiency. This will require a tech to come and measure the gas (I think) as the negative pressure aspect of the regulator makes it difficult for a homeowner like me to correctly measure the pressure with a regular ol' manometer.
2. The burner area has been trashed and needs to be cleaned out. While I've been pretty good/lucky so far this is not my area of expertise and to further excavate is a little outside of my comfort zone.
Phew!
If you've read this far and have anything to offer, I'd greatly appreciate it.
Thank you!
We're firing up our hot tub after some time without it and are running into some problems.
First was E05, so I replaced the stack flue sensor.
While doing so I found that our heater has been invaded by rodents with the usual detritus everywhere and the wires to the stack flue sensor had been chewed through.
I repaired the wires and the E05 went away.
I also cleaned out the junk and inspected the remaining wires and was unable to find any additional damaged wires.
Now the heater will not ignite.
* The blower spins up, the orange LED lights up and flashes. When the ignition fails the LED goes off.
* When the blower spins up and fails to ignite there is a scent of gas.
* This cycle repeats three times and then the red SERVICE HEATER LED lights up on the front panel.
* I replaced the HSI ignitor without effect.
* I measured 120V to the ignitor leads on ignition attempt.
* There are no lit LEDs on the control panel except for SERVICE HEATER.
* I found some damage to the orifice air kit which includes the hole having been widened by the rodents.
* I inspected the gas orifice and it is not clogged.
* None of the clear tubing between the regulator/valve, orifice, and control board has been damaged.
* There appears to be no rodent intrusion into the main control panel area, and the wires appear to be intact.
At this point I am down to two additional lines of troubleshooting:
1. Somehow the gas pressure has diminished to the point of insufficiency. This will require a tech to come and measure the gas (I think) as the negative pressure aspect of the regulator makes it difficult for a homeowner like me to correctly measure the pressure with a regular ol' manometer.
2. The burner area has been trashed and needs to be cleaned out. While I've been pretty good/lucky so far this is not my area of expertise and to further excavate is a little outside of my comfort zone.
Phew!
If you've read this far and have anything to offer, I'd greatly appreciate it.
Thank you!
