
IMPORTANT - Unplug your prime thermostat before attempting to
replace a blown fuse. If you are unsure regarding any aspect of
this process please seek the help of a competent electrician or
return the thermostat for us to replace the fuse for you.
FUSE SPEC = 20mm x 5mm 5 Amp ULTRA FAST
TOOLS REQUIRED = PHILLIPS SCREWDRIVER
Internal Fuse
Replacement
Microclimate International
Unit 3 Heath Mill Enterprise Park
Heath Mill Road
Wombourne
England
United Kingdom
WV5 8AP
Tel : 01902 895351
Fax : 01902 897613
www.microclimate.co.uk
If the Y or B channel on your prime has no power output it is more than
likely that a protection fuse has blown to protect the thermostat. Due to
the variable quality of the bulbs currently being sold these fuses are fitted
to protect the circuitry of your prime thermostat. Bulbs can draw many amps
for a split second when they blow and these fuses are designed to be fast
acting to prevent them damaging the thermostat.
Replacing the Internal Fuses
1. Ensure your thermostat is disconnected from the mains. Unplug the mains
plug and USB connection.
2. Place the thermostat on a flat surface.
3. Turn the thermostat over so you can see the 2 screws that hold the
casing together
4. Remove the 2 screws using a phillips screwdriver.