R
Renato
Hi,
I have the combi boiler Potterton/Baxi Promax Ultra 40.
When I set the temperature to (e.g.) 45°C, the boiler fire up and stay at max power until the hot water temp increases to 57°C and them it turn off the flame.
When the temperature reduces to 42°C, it fire up again.
Doesn't matter the setpoint of the temperature. If I set it to 55°C, it keeps on until the temperature reaches 67°C and them turn off. And turn on when the temperature drops to 52°C.
Instead of reducing the flame to keep the temperature stable around the set temperature, it keeps turning on & off.
It looks like it's at 100% or 0%. No middle term.
If I increase the water flow opening 2 taps on the same time, let's say the shower + sink tap, the boiler modulate normally and keep the temperature stable. When the temp is stable, I close the sink tap and the shower keeps stable for the whole time.
Anyone have an idea what I need to do to fix this annoying problem?
Thanks in advance!
I have the combi boiler Potterton/Baxi Promax Ultra 40.
When I set the temperature to (e.g.) 45°C, the boiler fire up and stay at max power until the hot water temp increases to 57°C and them it turn off the flame.
When the temperature reduces to 42°C, it fire up again.
Doesn't matter the setpoint of the temperature. If I set it to 55°C, it keeps on until the temperature reaches 67°C and them turn off. And turn on when the temperature drops to 52°C.
Instead of reducing the flame to keep the temperature stable around the set temperature, it keeps turning on & off.
It looks like it's at 100% or 0%. No middle term.
If I increase the water flow opening 2 taps on the same time, let's say the shower + sink tap, the boiler modulate normally and keep the temperature stable. When the temp is stable, I close the sink tap and the shower keeps stable for the whole time.
Anyone have an idea what I need to do to fix this annoying problem?
Thanks in advance!
