Hey all, I'm returning for your advice on how best to resolve some issues with my furnace (and maybe my contractor).
About a year ago, I had this furnace installed after doing quite a bit of research on what I wanted and needed.
Overall, the furnace works great, but... it semi-regularly will throw fault codes. The biggest offender is the low pressure switch open code, which has happened 55 times(!) over the course of the year.
The only noticable impact of all this is the furnace will kick into high fire unnecessarily - this is apparently the failsafe behavior after the low pressure switch fault. It's annoying because in my small house, 60k BTU is a lot of heat and will make you break a sweat when it's running full-tilt on a mild day.
The total accounting of the errors:
32- low pressure switch open 55 times
42- inducer fault 2 times
34- ignition fault 18 times
33- limit fault 3 times
Now I've had the contractor out 3 times, twice in the spring and again recently. They have gone through all the standard troubleshooting steps several times, including checking the intake/exhaust plumbing. In the spring they replaced the low pressure switch and increased the inducer speed, but summer came before I really had a chance to find out if they fixed anything. Now that cold weather has returned it's clear that nothing has been resolved.
I had them come out again and they checked it out again, but didn't come up with anything better than "lets keep an eye on it". Of course the Low pressure fault has happened a couple times since then.
I'm getting tired of their lack of results, so I'm hoping that you can tell me whether the manufacturer offers any troubleshooting assistance for the contractor on troublesome issues.
Any and all advice is appreciated!
BTW my previous thread on this subject is here: