User Guide
DRF Room Thermostat
Changing the Minimum Temperature Setting
1.
To adjust the “Preset” temperature enter the User
menu by pressing and holding the Set button for
more than 5 but less than 10 seconds. The display
will show ‘
Pr
’.
2.
Rotate the dial clockwise until Lo is showing.
3.
Then press the
Set
button, the current setting is
shown.
4.
Rotate the dial clockwise to increase the minimum
temperature setting and anti-clockwise to reduce
the minimum temperature setting (min. 5°C) as
shown.
5.
Press the
Set
button to confirm, the display will
show Lo.
NOTE:
When adjusting the settings within the menu, if the
maximum or minimum possible setting are reached,
the display will flash to indicate you cannot adjust the
product further, e.g. you cannot set the temperature
lower than the minimum temperature setting.
To return to normal operation, either
press
the
Set
button
for more than 5 seconds
or
wait for 1 minute
and it will return automatically
.
Tamper Proofing
To tamper proof the product i.e. prevent unauthorised
adjustment of the product, set the Min. and Max. (HI and
Lo) temperatures to the same desired value using the
procedures above.
Fault Diagnosis
If the display shows E1, the following faults could have
occurred:
1.
Internal temperature sensor has failed. Replace
the unit,
2.
Ambient temperature is outside product operating
temperature range - 0°C to 50°C.
When the ambient temperature is back within the
operating range, the unit will function correctly.
Battery Replacement
■
■
When the batteries are getting low (approx. 30
days battery life remaining) the battery symbol will
flash in the display, it is recommended to change the
batteries during this period.
■
■
After approximately 30 days, a continuous battery
symbol only will be shown in the display and the unit
will remain OFF.
Remove the battery compartment by pinching the tabs
and withdrawing down. Replace the spent batteries
with 2 x AA 1.5V alkaline batteries ensuring correct
orientation. Replace the battery compartment pressing
fully home.
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