Gas Heater Recommendation... please

[rmeden]

I have a MiniMax 400k BTU in a pool I had put in last year.

Not as efficient as I'd like.. (not sure if anything is). When running, the exhaust is *very* hot.... heat I'd rather be putting into the water! It's hot even when the water is at 70 degrees. (I can understand it hot when the spa is warm). I've even thought of putting a coil loop over the exhaust!

I'm also on my 3rd control board... Keep getting fan speed errors (E04).... I'm not sure how reliable it will be.

[Katy-Texas]

I also have a Pentair Minimax model HTR 400 NT TSI NH installed in spring 2005, ie less than 1 year old, so far it's failed 3 times with error message E04 on LED screen which may be same problem as JWB's.

Not happy with this unit, rest of Pentair kit works great.

[JWB]

Thanks for the info... sorry you've had problems

[pj1016]

I have a Pentair MiniMax 400k that is almost a year old...no problems here.

pj

[Katy-Texas]

Update, darn Pentair Minimax 400 failed again for 5th time in 1 year with same E04 error message, so as well as phoning pool builder I emailed Pentair with my problem. They phoned me 5 days later and said E04 can be many things and very sorry for problem and can they send a specialist repair guy that they use here in Houston.

Guy came out found fan setting wrong and that only 1.25" of gas pressure not 2.25" recommended. Fingers crossed that problem will go away.

Talked with repair guy and he says:
1) He repairs lots of different brands
2) Pentair is slightly better than Hayward
3) Sorry but all units will fail with time, normally electrically
4) Newer units are not as good as older units as more electronics as required for low NOx emmissions.

FYI, when pool installed, electrician recommended I put rain gutter down side of house where kit is to reduce rain run off dumping on equipment and extend it's life, seemed reasonable so did that.