I have a Takagi KD-20 that works for a bit then stops and flashes an error code 21. We haven't had any problems with it before. Today it is -10degrees F with -30 windchill - the only thing that seems different from most days.
The manual just says "vent pipe".
any ideas on what is going on here?
when running inlet temp is 43 and out is at 122 until it stops...so it doesn't appear to be anything freezing.
The manual just says "vent pipe".
any ideas on what is going on here?
when running inlet temp is 43 and out is at 122 until it stops...so it doesn't appear to be anything freezing.