Problem with Danfoss FP715Si Programmer Discussion ThreadProblem with Danfoss FP715Si Programmer Electrical Advice
Re: Danfoss FP715Si Programmer
Anyone have any direct experience with this unit?
NB: There are quite a lot of posts online about this issue, but nothing I have found that has found the cause.
This Danfoss FP715Si Programmer that works fine.
But the following situation occurs from time to time:
The screen goes blank and both red lights stay on permanently,
and none of the buttons work, so the heating & hot water are powered continually.
I've not tried the reset, because this will change all the settings to default.
(NB: But those online who have used default say that it made no difference)
But if I power off (the main programmers power) for a while, then when I power back on, it usually works as normal for days.
NB: This unit’s install booklet says:
a: It has battery back-up, but doesn’t mention anything about how to change that battery,
or what would happen if the battery starts to fail.
No battery is visible, so I guess it's inside on the main PCB.
b: This also has a 'Service Interval Timer' (SIT) which when set to on, may do something similar to this issue?
Q1: Anyone used SIT and knows what then happens when a service is due?
NB: The SIT is used primarily for landlords, to force the tenant to seek a boiler service.
But this can’t be set to on, because this unit has been working fine for many years.
Q2 So is this issue a:
Symptom of a battery failure?
or something else,?
or a faulty unit?
Anyone know the solution?
Many thanks.
Problem with Danfoss FP715Si Programmer for the original thread on Electricians Forums
Re: Danfoss FP715Si Programmer
Anyone have any direct experience with this unit?
NB: There are quite a lot of posts online about this issue, but nothing I have found that has found the cause.
This Danfoss FP715Si Programmer that works fine.
But the following situation occurs from time to time:
The screen goes blank and both red lights stay on permanently,
and none of the buttons work, so the heating & hot water are powered continually.
I've not tried the reset, because this will change all the settings to default.
(NB: But those online who have used default say that it made no difference)
But if I power off (the main programmers power) for a while, then when I power back on, it usually works as normal for days.
NB: This unit’s install booklet says:
a: It has battery back-up, but doesn’t mention anything about how to change that battery,
or what would happen if the battery starts to fail.
No battery is visible, so I guess it's inside on the main PCB.
b: This also has a 'Service Interval Timer' (SIT) which when set to on, may do something similar to this issue?
Q1: Anyone used SIT and knows what then happens when a service is due?
NB: The SIT is used primarily for landlords, to force the tenant to seek a boiler service.
But this can’t be set to on, because this unit has been working fine for many years.
Q2 So is this issue a:
Symptom of a battery failure?
or something else,?
or a faulty unit?
Anyone know the solution?
Many thanks.
Problem with Danfoss FP715Si Programmer for the original thread on Electricians Forums
