Hydro-Hot Furnace Won't Come On

[Doc Mark]

Well, sorta. Got up this AM to 38 degrees and advanced the settings for both the rear & front furnace thermostat set points. Hydro Hot fires up, rear furnace comes on, blowing nice hot air, and nothing from the front.

So I kick up the setting for the front and still no blowers come on. Right now it is 66 degrees in the coach, and the thermostat is set on 78 degrees.

So, all you knowledgeable people, where do I go to begin T/S this? I know the HH works, so is there a fuse for the front blowers (both under-dash and sink blowers do not activate)?

Mark

[RJay]

Mark,
Does your panel show any error lights?

[Doc Mark]

Low Temp Cutoff Status - Green
Diesel Burner Status - Green

All other lights off.

Mark

[Doc Mark]

OK - it just came on!

As Dirk The Magnificent would say - Sigh . . . .

Mark

[RJay]

The gremlins are out early.

[Doc Mark]

Amen RJay - Thanks for the responses.

Mark

[dashdriver]

PHEW....nearly had my thinking cap on by the time I read it was working again

[Dave78Chief]

A site with useful general information related to Hydro-Hot (now Aqua-Hot) systems is RV Tech Library - Hydronic Heating Topics. The installation manual for a Hydro-Hot system indicates that power for the main unit and the blower assemblies is supplied by the single 25 Amp Hydro Hot fuse. Blower power is distributed to the individual units from the Electronic Controller Panel based on Zone control theromostat. If the manuals for your system are not at the link above, then they should be at the Aqua-Hot site (https://www.aquahotparts.com/eSource...ult/Index.aspx; Manual link at bottom of page). Hydro-Hot is in archived section. Never know when you or your Tech Rep might need them.

Dave

[Doc Mark]

Dave78Chief - thanks shipmate!

Mark