Faulty extractor fan sensor or damp flat?

dekaspace

I have been wondering why after 6 months in this property for one its almost always cold during day and warm at night, if I have a shower the sensor on the extractor fan comes on and stays on, even hours later and even in this warm weather.

But as I say the flat always feels cool during the day.

Even sitting on the toilet sets it off!

There appears to be no moisture in the air as even mirror which has condensation on dries up within minutes and floor a hour at most if it is soaking wet.

So could it be faulty? And could it be reason why flat is always cool or is the cool temperature reason why the fans always on?

Lorian

It will almost certainly have a little trimmer pot to allow you to turn down the humidity set point a little.

HouseBuyer77

Amazon sells a huge variety of cheap humidity sensors (https://www.amazon.co.uk/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=Humidity+sensor) you could get one and see what it reckons the reading is.

Doesn't sound like you have any damp issues. So either the fan is set to come on at too low a humidity level or it has a dodgy sensor.

TheGardener

Funny you should mention this - I had a sensor fan fitted in the bathroom about 6mths ago - its a trickle fan so on all the time but barely perceptible and should 'boost' when the humidity goes up i.e when we use the shower but it never does. In reality DD has to have an hour long hot bath and the walls running with condensation before it kicks in - but the last two days its boost has come on randomly in the evening when no one is in the bathroom, I assumed it was just the heat?

HouseBuyer77

Well the sensors in the fan are also likely to be of the cheap variety, so it would not surprise me to see inconsistent behavior or find behavior changes with temperature changes (though this is partially explained because temperature effects relative humidity and it's set to relative humidity).

dekaspace

With mine, lets say I have a shower at 2pm, up to that point I might of only had the fan on for a few minutes at max when in toilet, after the shower it seems to be on most of the time, even when in the shower sometimes it cuts out for a few seconds and comes back on again, after the shower for quite a few hours later it will come on and off at random intervals to around midnight which conveniently feels like when flat is the warmest so either that fan is sucking out the heat so when its off it feels warm or theres something else happening.

eddddy

dekaspace wrote: »

I have been wondering why after 6 months in this property for one its almost always cold during day and warm at night,

What type of construction is the house (or flat)?

For example, a victorian house (or conversion) with solid walls tends to behave like that.

G_M

What's the make/model? Look it up on the internet for
a) instructions (eg a setting control) or
b) reviews mentioning faults

Do you own it? Or are you a tenant? If think it's a fault & you own, then repair or replace. If a tenant, write to your landlord.

dekaspace

Can't see a make, the sensor part has faded printer bit, and in the hall has a large switch and fuse box next to a strange looking device.

Its a ground floor council flat about 50 years old but with upvc glazing only a few years old.