On 08/02/2021 19:14, Jeff Layman wrote:
The worse problem I had with the Scan is a safety design issue really.
One day I topped it up and closed the door after the new wood was
roaring away. When the door is closed the fire usually goes down
somewhat, but this time it didn't. It was just like a few weeks earlier,
when I'd had to replace the ceramic rope as it had become compressed,
and air was leaking in past it. But as I'd replaced that, it couldn't be
the cause. I then saw the fire inside, through a gap between the stove
body and the door. I thought I hadn't shut the door properly, so
refitted the removable handle and turned it to reclose the door. It made
no difference. I shut down the airwash completely, but like yours, there
is no control over the tertiary air. I then had to hold the door closed
until the fire went down. After the wood had burnt low, I opened the
door and found the bolt holding the latch was loose. I tried tightening
it, but it just turned. I removed it completely to find the end threads
were stripped! Luckily I had a spare 5mm bolt of the right length and
use that to hold the latch. It worries me that, if that screw fails,
there is no way the latch will hold the door closed, and no way anything
else can hold the door closed as the catch for the latch is internal and
inaccessible.

I had something similar at first and it was ash that had built up at the
back of the ash pan such that the ash pan did not fit as far in as it
should have. This caused the door to contact the ash pan and be slightly
distorted when the lever shut the door, allowing a small leakage of air
passed the bottom seal.