01455 888 000
[email protected]
www.envtecservices.co.uk
My air con unit just won’t seem to heat
or cool
Common problems
with air conditioning
units & cellar coolers
Check that the controller is showing a sunshine
symbol if you want it to heat or a snowflake if you
want it to cool. It’s always worth checking the
batteries too!
It was really cold when we came in this
morning. We’ve put the air con on but it
just won’t get warm
My unit isn’t heating or cooling the room It’s quicker to heat up a pan of warm water rather
very well
than a pan of icy cold water! In extreme cold during
If you put the heater on in your car, you wouldn’t
open the windows. The same applies to air
conditioning units & cellar coolers- if you leave the
door open, the unit will be trying to heat or cool
your entire building!
the winter, it’s advisable to keep rooms at a base
temperature and increase the heat a degree at a
time when the room is in use.
Although you can turn your air conditioning unit
down to as low as 16°C, it will not work efficiently
at this temperature. The optimum temperature to
run a unit in for cooling is 19°C .
results in it feeling like the unit is blowing out cold
air. On some units there are settings that can reduce
this feeling.
My air con unit was heating nicely then
started to blow out cold air. What’s
It’s really hot in here so we’ve set the air happening?
con to a low temperature, but it isn’t When the air con unit has reached temperature it
blowing out any cold air
will stop heating, but the fan will keep running which
It’s cold outside and my air con unit won’t
It’s so cold outside, so we’ve put the air heat. Why?
con on at 28°C, but it’s not blowing out You know how the back of a fridge is always warm
any warm air
while the inside is cold? Air conditioning units work
The speedometer in your car shows 150mph, but
you know your car won’t go this fast! This is similar
to your air conditioning unit- although it shows it
can heat at 28°C, we find the best temperature to
run a unit on in heating is about 20-21 degrees.
in a similar way. If you ask your indoor unit to heat,
the outdoor unit will blow out cold air. In very cold
weather, especially during frosts, the outdoor unit
will freeze up and go into ‘auto defrost’. The best
way to speed up this process and get it back to
Common problems with air conditioning units & cellar coolers
normal is to put the indoor unit into cooling for
about 30 minutes which will make outdoor unit
blow out warm air and melt the ice. Make sure the
fan speed is on a low setting so it doesn’t feel too
cold in the room.
issue with units that are in rooms where ‘smelly’
activities take place, like kitchens or changing
rooms. The chemicals that the engineers use are
specially formulated as to not cause any harm to
the unit. There are also special smell busting blocks
that can be put in smelly units.
My air conditioning unit won’t turn on.
My unit isn’t working but none of the
What can I check?
Has there been a power spike? Check the electrical problems
described match what’s
supply at the distribution board to see if any of the happening?
breakers have tripped. If the breaker hasn’t tripped,
try the isolator on the outdoor unit. If your outdoor
units are in an accessible place, it’s possible that
somebody could have turned it off.
My unit is showing a fault code.
What do I do?
Take a note of the unit make and the room it’s in
and call our service desk on 01455 888000 opt 1.
The more information about the problem that you
can give us, the more we will be able to help. If
there’s anything we can help solve over the phone,
we will, but if we’re not able to, we will schedule an
engineer to investigate the problem.
Don’t panic! Take a note of the fault code and call
the service desk on 01455 888000 opt 1. Some
fault codes are less serious than others, so it may
not be as bad as you think.
My unit is leaking. Is it safe to use?
Yes, you can still use the unit but you may want to
put something underneath it to catch the drips! The
water is actually condensation that is created inside
the unit and is either pumped away or drains away
naturally. The unit will be leaking if the pump has
failed or if there’s a blockage in the drainage. Call
the service desk on 01455 888000 opt 1 to report
the problem and arrange for an engineer.
My air con unit smelt really bad so I
sprayed it with perfume. Why does it still
smell bad?
Spraying perfume or deodorant into a unit can
cause major problems as the chemicals in them can
cause internal parts in air conditioning units to rot
and corrode. Persistent issues with smelly units tend
to be caused by someone repeatedly spraying the
unit to make it smell nicer! Smell can also be an
01455 888 000
[email protected]
www.envtecservices.co.uk