Harman P61 manual turn off in room mode.

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Not trying to be a jerk, but depending on what happens before a power outage, you can experience a voltage spike. That voltage spike could take out a board.

I have fairly frequent outages and the lights will sometimes flash on and off several times before going out completely. The voltage spike is likely to occur during the time the lights are flashing on and off.
 
Only had to change ESP colour to black. Running now and checking temps.
Yes, as mentioned get a surge protector as the disturbance/spike occurs before the power goes out. In fact the power turning back on is planned, and that does not produce a spike. Perhaps the HVAC guys installed a whole home suppressor in your panel? I have one of those, and the P43 plugged into a surge outlet as well. Good luck
 
is you stove plugged into an actual surge protector? Be careful a lot of power strips are nothing more than an extension cord, meaning no surge protection.
I unplug mine when the power goes out.

Surges happen all the time with the power on - Just a power blip contains power surges - it depends on severity as to whther it will harm anything or not.

A lot of people will buy cheap surge protectors that have the very minimum of joule protection. I get more expensive ones that can handle up to 4,000 joules. They are still cheap protection.
 
Yes, but in room mode it has some regulation. If your stove is located in the room you want to heat, you would just extend your probe to an inside wall. If your stove is not in the room you want to regulate, ie a door separates the area you want to heat, it won't regulate that other room at all. But at least it's free to try for the room it's in. All you need is two conductor 18 guage wire and some small stab connectors. I cut my wire, but that is because I mounted just the sensor on a wall and used existing thermostat wire. You could use an old type mercury type or a millivolt type also, but it's not the same hookup. They would be wired in series with the probe at the stove.
I haven't pulled the board yet, but would the dip pins in the new one build in 2025, the same as the old one built in 2022. Same version F
Turns out I just had to change the ESP colour to black. I'm up to 4 and no issues.
 
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Turns out I just had to change the ESP colour to black. I'm up to 4 and no issues.
Are you running the new card? If so, problem might be solved.
 
Are you running the new card? If so, problem might be solved.
I am and it worked fine until an hour ago. Running it in manual at 5 holding 390-400, just went in it's running at 435, turn it down to 4 went down to 370 and then proceeded to go back up to 405, it's down to 3 now and I'm waiting to see what happens now. Boards 3 days old. So basically doing the same thing. $350 out the door and once again no control .
 
I am and it worked fine until an hour ago. Running it in manual at 5 holding 390-400, just went in it's running at 435, turn it down to 4 went down to 370 and then proceeded to go back up to 405, it's down to 3 now and I'm waiting to see what happens now. Boards 3 days old. So basically doing the same thing. $350 out the door and once again no control .
 
Have you ever replaced your ESP probe? Thats what's monitoring the temperature and telling the circuit board to either feed more pellets or less.
 
I am and it worked fine until an hour ago. Running it in manual at 5 holding 390-400, just went in it's running at 435, turn it down to 4 went down to 370 and then proceeded to go back up to 405, it's down to 3 now and I'm waiting to see what happens now. Boards 3 days old. So basically doing the same thing. $350 out the door and once again no control .
I don't know. I have not ran stove mode in a long time. I did when I first got it, but was experimenting. I never measured any temperatures. I'm lucky as my stove is in the basement, and it's all one big room. I have the probe on the wall away from the stove. I run Room mode/off and it's great. Once it warms up I will run my heat pumps and then run the stove only to warm the basement up at night for TV viewing.
 
Have you ever replaced your ESP probe? Thats what's monitoring the temperature and telling the circuit board to either feed more pellets or less.
Apparently it either works or doesn't. And if it isn't you get a code, but your right only thing left.
 
After a cool off period I'm now back to 4, 3.5 was half way which is good. Problem is, is it going to do it again? I guess I'll find out
 
Worked okay over night, going to pick up an ESP Monday. Not going to be cold enough to get into the 4s as the day progresses.
 
Apparently it either works or doesn't. And if it isn't you get a code, but your right only thing left.
The probes are not too expensive, and if you have black wires now that is really old. You would get the red which is the latest to go with your new boards. I guess board 1 is now a proven spare.
 
No words….and I would be super impressed if I EVER saw a Pelletstove that was capable of doing exactly what you expect from one. For the record my P61-2 has never been precisely what the dial temperature was set at…does the job of heating 1500 sq ft fine though.
 
No words….and I would be super impressed if I EVER saw a Pelletstove that was capable of doing exactly what you expect from one. For the record my P61-2 has never been precisely what the dial temperature was set at…does the job of heating 1500 sq ft fine though.
Neither do I, but close is good. I retested it 4 hours later and it was within 10f of what it should be. I just want it to be consistent, which this one isn't. It's like driving a car, when you want brakes, you should get brakes. When I set the pellet stove on a given number, I expect it to be within 10-15 degrees. Nothing like leaving for a couple of hours and coming back to either a cold house or a hot one. I posted a picture of the old ESP, badly pitted and rusty. I mean they want like $8k for a new one, you'd expect the same.
 

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No words….and I would be super impressed if I EVER saw a Pelletstove that was capable of doing exactly what you expect from one. For the record my P61-2 has never been precisely what the dial temperature was set at…does the job of heating 1500 sq ft fine though.
Id buy it. I also have a Quadrafire, never needed to test it. Although it's a back up now. Not had the same issues.
 
Id buy it. I also have a Quadrafire, never needed to test it. Although it's a back up now. Not had the same issues.
I'm glad you got it working the way it should. That's a good stove design. -2C here today with snow and freezing rain. Nice and warm with the heat pumps upstairs, and pellet stove in the basement.
 
I do not believe you will ever get what you want !!
Today was nice here, above 50 ::F . My old stove was set as low as it would burn, and I
had to shut her down house just to warm . There are 2 many variables when heating with a stove
Does not matter if it is pellets, gas, or wood. Just thankful I have a dependable source of heat
 
I do not believe you will ever get what you want !!
Today was nice here, above 50 ::F . My old stove was set as low as it would burn, and I
had to shut her down house just to warm . There are 2 many variables when heating with a stove
Does not matter if it is pellets, gas, or wood. Just thankful I have a dependable source of heat
Yup at 50, mine would be off too. I just want what you do, a reliable heat source. I'll be shutting mine off Sunday as it's going to be in the 50s. Freezing rain, pellets and just messy here right now. 30f
 
If you want that sort of precision in temperature, I think you should consider installing a thermostat in line with your temperature probe.
I have a programmable one . Set it to 68 degrees, it clicks on at 66 and shuts down at 70. I have auto ignition so stove will completely shut down until there is a call for heat. Its saved me a lot of pellets over the years.
 
It started running away again, so nothing's changed. It ran about 24 hours at a temps around 340, Temperatures dropped outside and climbed inside, so I checked it and it was at 365 and climbing. I turned it down to 2, which won't be warm enough, so I'll turn it back up when it hits that point or before bed, and see what it like in the morning.
 
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