Efm and Hot water

djm123 · Post by **djm123** » Sun. Jan. 02, 2022 12:54 pm

My bath water STARTS out warm and almost immediately gets cold. Nothing on the unit is leaking whats up with that?

Post by **Lightning** » Sun. Jan. 02, 2022 12:58 pm

djm123 wrote: ↑
Sun. Jan. 02, 2022 12:54 pm
My bath water STARTS out warm and almost immediately gets cold. Nothing on the unit is leaking whats up with that?

Tell us about your EFM and the water coil in it. How is your domestic hot water plumbed?

djm123 · Post by **djm123** » Sun. Jan. 02, 2022 1:02 pm

probably efm 520

Post by **Lightning** » Sun. Jan. 02, 2022 2:09 pm

How long have you been using it?

Holdencoal · Post by **Holdencoal** » Sun. Jan. 02, 2022 2:48 pm

Is this happening at each faucet? If it’s not then I bet the cartridge in the tub/shower has gone bad.

Post by **Lightning** » Sun. Jan. 02, 2022 3:02 pm

I'm wondering if the coil needs descaling or if the mixing valve is bad that's why I was asking for more history and details..

Pacowy · Post by **Pacowy** » Sun. Jan. 02, 2022 5:03 pm

I'd be curious about the aquastat setting(s) and the mixing/tempering valve (if any).

Mike