New P68 developing ticking on heat up

[DeadTreeBurner]

After about 30 hours of use I've noticed a new ticking/clicking sound when the stove is first heating up from expanding metal pieces rubbing each other. It's coming from the top/heat exchanger area. Makes me wonder if there's a bad weld, or if some of the overlapped metal I could see in the back corners of the heat exchanger has just warped ever so slightly and now rubs as it heats up.

Anybody else noticing this with their Harman's, or any pellet stove for that matter?

 

[Ssyko]

Common on all heating appliances. Metal expansion is unavoidable.

 

[Dataman]

that is normal. My Harmon XXV does that too. Nothing wrong.

 

[DeadTreeBurner]

I doubt I would have paid much attention if it had done it from the start and/or wasn't in the heat exchanger area as opposed to the back of the stove where bolt/screw fasteners are used. But yeah, I doubt there's any issues, more curious than anything else.
Thanks all.

 

[Washed-Up]

Can you post a video?

 

[DeadTreeBurner]

Can you post a video?

Sure, but not until later this evening or earlier tomorrow. Nothing to see, I'm assuming you're wanting audio?

 

[Washed-Up]

With audio yes

 

[jzm2cc]

Never noticed those type noises on a welded P series stove, on a bolted together Accentra that would make sense.

 

[Washed-Up]

When my P61a is cold and it’s cold outside it’ll pop and tick as it’s warming up

 

[DeadTreeBurner]

Here's a short clip. Every couple of seconds until it gets up to temp.

 

[Washed-Up]

Yeah I’m pretty sure that’s just metal expansion, mine does the same...does it go away after it’s up and running for a bit?

 

[bogieb]

Mine do that too.

The P43 also has one really loud tick (much different than the normal ticking) as it is heating up and then again as it is going cold (sometime after the exhaust fan going off). Maybe it has something to do with having the heat shields on the sides, I don't know. I've learned to ignore it.

 

[DeadTreeBurner]

Yeah I’m pretty sure that’s just metal expansion, mine does the same...does it go away after it’s up and running for a bit?

Yeah, no doubt for me that it's heat expansion. It just got my attention because it didn't make any noise during the first half dozen or so cold starts. You can see some overlapped metal "tabs" that don't have a weld bead in the back corners when peering into the space above the heat exchanger under the stove top. So it's probably a slight change in position of something like that that's now rubbing when the stove is heating up or cooling down.

 

[Tonyray]

After about 30 hours of use I've noticed a new ticking/clicking sound when the stove is first heating up from expanding metal pieces rubbing each other. It's coming from the top/heat exchanger area. Makes me wonder if there's a bad weld, or if some of the overlapped metal I could see in the back corners of the heat exchanger has just warped ever so slightly and now rubs as it heats up.

Anybody else noticing this with their Harman's, or any pellet stove for that matter?

P61A here.. Alway get some clicking sounds cold start..8 yrs now.. goes away.. also the OAK inlet flap likes to click/dance a bit on cold start also.

 

[techfranz]

My Accentra 52i started making the same taking noises on heat-up. From other threads Harman will replace if the noise is bad, but the new ones suffer the same problem. I have a theory that maybe it is only an issue as the stove gets used and there is some build-up. I wonder if it will quiet down after a cleaning.

 

[Washed-Up]

Mine makes a “ticking” in the metal as it expands when heating up, but if it’s a fan motor, it usually won’t go away after it warms up

 

[DeadTreeBurner]

Update: After sitting all year, I'm not noticing the same ticking as before. So probably not a big deal one way or another.

 

[SidecarFlip]

Just metal expansion and contraction your central furnace does the same thing.