Water not hot enough

[Malcolmd1]

Hi guys, wondering if someone could help me.

I've lived in a condo townhouse for last two years and I have a flowmax 120 tankless water heater. Just recently I am getting only warm water from both the showers and the bathtub but all the sinks are still getting hot water. Wondering what could be the problem. I have a wwatts temperature control valve but I'm not sure if I should touch it since it's never been changed and I don't want to get scolding water in the sinks in case my kid gets burned. Thanks for any help you guys give me.

Malcolm

 

[SHEPLMBR]

When was the last time it was flushed? There is no tank for sediment to go. Needs to be flushed minimum 2x a year with a vinegar solution or they make a tankless flush solution.

 

[frodo]

When was the last time it was flushed? There is no tank for sediment to go. Needs to be flushed minimum 2x a year with a vinegar solution or they make a tankless flush solution.

that is why i hate them things
the money you think you are saving, you are paying out in maintaince
jmho

 

[johnjh2o]

If your tub & shower faucet is balance pressure the balancing spool may sticking. What make faucet do you have?

 

[Debo22]

Check the anti scald setting behind your shower valve handle, in the winter the cold water temperature can come in 30-40 degrees colder. You may not be able to turn the handle far enough to allow enough hot water to compensate for the temp drop.