Hot water

[disanto5]

2013 tiffin QBA. Hot water heater is working and but not hot water to the faucet? Both city water and on board pump conditions.

[Skip426]

If you just de-winterized the coach , make sure the by-pass valves for the water heater are in the proper position. Also check the the shower valves ; inside and out ; are shut off at the taps and not just the shower head .

[disanto5]

Thanks. The strange part is, not the first usage of the year and worked fine last weekend

[Old-Biscuit]

Clarification..........

NO flow at any faucet hot side
No flow at one faucet hot side
Flow but NOT hot


No flow at ANY.....
Check valve in HOT out on backside of WH Tank (top fitting) has failed
Remove/replace OR remove/eave out and install a hot out shut off valve (beter option)

No flow at one faucet......
Replace valve assembly cartridge (if single handle faucet)
Remove clear/replace hot knob valve (if separate hot/cold knobs)
Remove hot supply line and check for blockage

Flow but its not hot....
Bypass valve left open/cracked open/leaking thru
Shower(s) inside/outside shut off via 'button' on handle vs hot/cold knobs----cold mixing with hot causing warm in system


IF you have an Atwood XT model.......
NO Flow----mixing valve on backside of WH Tank is clogged up with crud/scale from hot water tank
Remove mixing valve...soak in straight vinegar or better yet CLR to dissolve build up
Replace mixing valve -----Atwood OEM $160-----Honeywell thermal valve $90 at hardware stores