RV Hydronic Heater Repair
Model
AHE-100-04S
Serial numbers 04-534 to
This model may also be known as:
AHE-120-04X, AHE-130-04X, AHE-140-04X
These are models that were built with dual electric elements
This model of Aqua-Hot uses the special Camco -100 Boiler coolant.
Changes From Previous Model
- Had plastic / PEX drain valve (see comments below in common problems)
- Uses ELE-630-001 electric relay.
Part Notes
- Control Thermostat - ELE-014-005
- Electric high limit thermostat - ELE-HLT-322 -or- with terminals crimped on ELE-ASY-200-HYD
- Diesel high limit thermostat - ELE-HLT-322
- Control Board - ELE-PC4-010
- Electric relay - ELE-630-001
- Tank level sensor (float switch) - ELE-800-002
- Zone and engine preheat pumps (are no longer available). Pump upgrade kit, here: PLE-100-905-FRU
- This model uses the special GRAS (generally recognized as safe), Camco -100 Boiler coolant, here: MSX-300-270
Routine service parts and kits - Routine Service Parts Scroll down page for filter and nozzle packages.
Common Problems
- The PEX / plastic drain valve should be replaced (most have already been done), here: replacement Drain Valve
- The PEX water lines should probably be routinely replaced. If you have fresh water leak, then the rubber gaskets in the PEX fitting are hard and not sealing well. Water Line Kit
- Radiator cap should be replaced at least every other year (or as often as needed). PLE-102-229 or Cap with Lever PLE-108-229-L