Harman XXV won't restart after being turned off for cleanings.

Mine reacts the exact same way...wish I had an answer

You have your igniter switch in the Auto position?

Sounds like you're missing something basic. Try looking at the stickies at the top of the page. Have you cleaned around the ignitor, ESP, and removed the cleanout tee? How about cleaning fines from the slide plate area in the rear of the stove?

Have you tried turning temp up higher than 68 when using room mode?
It will not fire up if the room is warmer than the set temp.

The ignitor is probably working fine if it is working in stove temp mode.
IMO unplugging the stove while running is a bad idea, and I agree
it does sound like you are missing a step.

I am wondering if we should be pulling the plug from the ups after the stove shuts down on it's own ?

oc4man said:

I am wondering if we should be pulling the plug from the ups after the stove shuts down on it's own ?

Click to expand...

Why?

Is the burn pot filling with pellets? I had the same type problem after a few months of burning in the beginning. Make sure during cleaning to loosen the wing nuts under burn pot, remove the plate and vacuum out the ignitor area. Also make sure to scrape everything out of the burn pot. When you think your about to break the tool or the stove, you are scraping hard enough. Settings: room temp approx. medium, feed rate 3-4, ignitor on auto, and crank the heat up to get it started. The stove should give a fault indicator(flashing status light) after a while of not igniting. Good Luck

tinkabranc said:

oc4man said:

I am wondering if we should be pulling the plug from the ups after the stove shuts down on it's own ?

Click to expand...

Why?

Click to expand...

Other than that, I have followed all the guides & tips of cleaning the stove and when it's time to start up it will just run the combustion fan until I turn the knob to stove temp to get it to ignite and then set it back to room temp. If the stove shuts off during the day it will start on it's own no problem.It's just when I do a thorough cleaning once a week.

Just a suggestion, unplug your electric during cleaning, as recommended by the manual. I think there is still power to the board and igniter, if it is still plugged in during cleaning (don't want a nasty shock while poking with your finger around the igniter). I had this problem and just tapping (with my fingertip) on the control board (after cleaning) turned it on (correctly). Dealer said I had a bad capacitor in the board and replaced it under the warranty. Also try moving the sensor wire closer to a cold spot on a exterior wall.

Since it works in stove temp mode, it would appear the ignitor is working correctly. I have found that if the actual room temp is close to the temp I set in room temp mode, in your case 68 degrees, then the stove will not come on. However, my combustion fan does turn on after a cleaning. Having the room temp to close to the actual room temp might be your problem. Have you tried to turn the temp up to see if it starts?

I ran out of pellets once, (only been burning for a week, myself), and noticed something similar. After I loaded up the hopper with some pellets, nothing was happening. I tried turning up the temp dial, (in room-temp mode), and nothing happened. I found in the manual that after running out of pellets, you need to turn the feed rate dial over to "test" for one cycle, in order to load the auger with pellets. I did that...then as soon as I turned the feed rate back to "4", the ignitor came on immediately, and normal operation resumed.

OTOH...I've also shut the stove "off" for the night (didn't let it run unattended for the first few nights, just to be sure everything was working ok), and I didn't have to do anything special to get it going again. just turned the dial back in to the "room temp" range, and the ignitor kicked on immediately, without having to do anything else.

Did you say that you were unplugging it for cleaning? maybe it needs to go through "test" mode after being rebooted like that. I haven't unplugged mine from the wall, yet.

WarmInNH said:

Since it works in stove temp mode, it would appear the ignitor is working correctly. I have found that if the actual room temp is close to the temp I set in room temp mode, in your case 68 degrees, then the stove will not come on. However, my combustion fan does turn on after a cleaning. Having the room temp to close to the actual room temp might be your problem. Have you tried to turn the temp up to see if it starts?

Click to expand...

Yes,I have turn the temp up with no results .The only way I have successfully got it run after cleaning was turn to stove temp or pull the plug (reboot).

oc4man said:

WarmInNH said:

Since it works in stove temp mode, it would appear the ignitor is working correctly. I have found that if the actual room temp is close to the temp I set in room temp mode, in your case 68 degrees, then the stove will not come on. However, my combustion fan does turn on after a cleaning. Having the room temp to close to the actual room temp might be your problem. Have you tried to turn the temp up to see if it starts?

Click to expand...

Yes,I have turn the temp up with no results .The only way I have successfully got it run after cleaning was turn to stove temp or pull the plug (reboot).

Click to expand...

Have you tried to turn the dial to 'off' for a couple of seconds and then back to the room temp setting? This is all I have to do with mine to get it going again. If that doesn't work, then something is not right and you should call your dealer. You should not have to unplug to get it going again.

WarmInNH said:

oc4man said:

WarmInNH said:

Since it works in stove temp mode, it would appear the ignitor is working correctly. I have found that if the actual room temp is close to the temp I set in room temp mode, in your case 68 degrees, then the stove will not come on. However, my combustion fan does turn on after a cleaning. Having the room temp to close to the actual room temp might be your problem. Have you tried to turn the temp up to see if it starts?

Click to expand...

Yes,I have turn the temp up with no results .The only way I have successfully got it run after cleaning was turn to stove temp or pull the plug (reboot).

Click to expand...

Have you tried to turn the dial to 'off' for a couple of seconds and then back to the room temp setting? This is all I have to do with mine to get it going again. If that doesn't work, then something is not right and you should call your dealer. You should not have to unplug to get it going again.

Click to expand...

When cleaning stove it is in the off position..it's when I turn the knob back to room temp setting the fan will come on and not feed pellets.I will try that next time I clean the stove..turn off again then back to room temp setting.
Thanks for the input folks!!

gumballrv said:

I have a new this season Harman XXV that runs set at Room Temp-68 deg. Pellet Feed Rate-4. I have had this issue the last few times I've turned the stove off to be cleaned, and I'm not sure if it's something that I'm doing. So I'm sure this forum will lend some feedback.

I turn the Room Temp/Stove Temp knob on the control panel to off. I then wait for the combustion fan to stop (usually 1+hour). I clean/scrape/vacuum. When I turn the knob back to Room Temp, the combustion fan comes on and stays on (last time I let it run for 4+hours with nothing happening) and the ignitor or ignitor indicator LED on the control panel never comes on. I can move all the knobs, but the only two ways I can get the ignitor to come on is to turn the knob to stove temp until it lights, then switch back to room temp or unplug the stove and "reboot" the control panel. I'm sure this isn't normal and I don't want to waste a service call if this is something one of you has experience with.

Thanks!

Click to expand...

Wow.......
(last time I let it run for 4+hours with nothing happening) and the ignitor or ignitor indicator LED on the control panel never comes on.
Then it's not the vacuum switch, leds will turn on but will not feed or start ignitor

Lots could be going on here

If comb blower runs when you turn it on but nothing else try turning the temp dial down comb blower should shut off.
if it doesn't I would suspect the ESP is reading incorrectly, that is it thinks the stove is still hot....Could also be the board too

the main difference between room and stove temp is that stove temp is governed by ESP and room temp is controlled by room sensor and setting on temp knob.
turning the stove to stove temp to get the LEDs to turn on and then going back to room temp works?????? Wow.....Like I said Lots going on here......

You're best bet IMHO is to call the dealer and have him plug his DDM into the board and check the correlation between the ESP, room temp probe and the Control board. That's the best way to tell............
There is something wrong here....