Hello. New to the forum but I have seen members have been able to help people with their heating problems and I was hoping someone might be able to help me out similarly. I am a complete novice when it comes to plumbing/central heating so might be missing something really obvious but I will try to explain what the issue is as best I can and hopefully someone might be able to offer some advice.
The system I have is:
Boiler: Remeha Avanta Plus 30S
Timer/controller: Drayton LP522
Hot water thermostat: Potterton PTT2
Central heating thermostat: Potterton PRT2
All of the system was already installed when we bought the house (about a year ago) and it was all working fine until a few months back.
The timer/controller appears to work correctly (i.e. the display shows the time correctly and the little green lights showing whether the hot water or heating is on illuminate according to the programmed timings or when the unit is manually set to “on”) but it does not seem to trigger the thermostats, and therefore the boiler, correctly.
If I want the central heating to come on I need to ensure that the central heating light on the timer/controller is illuminated (i.e. controls are either “on” or set to “timed” and the programme is timed to be on) but the light on the central heating thermostat does not illuminate until I cycle the hot water settings through to “off”. Once I do this, the light on the central heating thermostat comes on and, if the room temperature is below the thermostat setting, the boiler kicks into life.
The reverse is also true (i.e. I cannot get the hot water to come on without manually cycling the central heating settings through to “off”).
I do not have to leave the setting at "off" but can cycle back to "timed" or "on" without then affecting whichever thermostat has kicked in to life.
It is not possible to have both the hot water and central heating on at the same time.
I found the manual for the boiler and then followed the instructions to check whether it was set to be able to heat hot water and central heating simultaneously and it was.
I cannot see anything obvious in the instructions for the Drayton LP522 that indicate that I might have entered a mode where it will only heat hot water or central heating but not both.
I have tried turning off the mains power to see if this would reset things but after everything powered back on the situation is unchanged.
I put up with the situation for the last few months as I didn’t really need the central heating and manually heating the water was not too much of a chore but now that the temperatures outside are dropping I would like to get this sorted so my family don’t freeze in the mornings.
Any suggestions would be very gratefully received!
The system I have is:
Boiler: Remeha Avanta Plus 30S
Timer/controller: Drayton LP522
Hot water thermostat: Potterton PTT2
Central heating thermostat: Potterton PRT2
All of the system was already installed when we bought the house (about a year ago) and it was all working fine until a few months back.
The timer/controller appears to work correctly (i.e. the display shows the time correctly and the little green lights showing whether the hot water or heating is on illuminate according to the programmed timings or when the unit is manually set to “on”) but it does not seem to trigger the thermostats, and therefore the boiler, correctly.
If I want the central heating to come on I need to ensure that the central heating light on the timer/controller is illuminated (i.e. controls are either “on” or set to “timed” and the programme is timed to be on) but the light on the central heating thermostat does not illuminate until I cycle the hot water settings through to “off”. Once I do this, the light on the central heating thermostat comes on and, if the room temperature is below the thermostat setting, the boiler kicks into life.
The reverse is also true (i.e. I cannot get the hot water to come on without manually cycling the central heating settings through to “off”).
I do not have to leave the setting at "off" but can cycle back to "timed" or "on" without then affecting whichever thermostat has kicked in to life.
It is not possible to have both the hot water and central heating on at the same time.
I found the manual for the boiler and then followed the instructions to check whether it was set to be able to heat hot water and central heating simultaneously and it was.
I cannot see anything obvious in the instructions for the Drayton LP522 that indicate that I might have entered a mode where it will only heat hot water or central heating but not both.
I have tried turning off the mains power to see if this would reset things but after everything powered back on the situation is unchanged.
I put up with the situation for the last few months as I didn’t really need the central heating and manually heating the water was not too much of a chore but now that the temperatures outside are dropping I would like to get this sorted so my family don’t freeze in the mornings.
Any suggestions would be very gratefully received!