Troubleshooting Guide - Dimplex DuoHeat Duo300N Operating Instructions Manual

Troubleshooting guide

Please note this guide refers to heaters being operated individually. If a central control system is installed some issues may require
that you refer to the instructions provided with the system controlling the heaters.
ISSUE SOLUTION
My heater is too cold •
•
•
•
•
•
•
My heater is too hot •
•
One of my heaters is •
colder than another •
My room is not warm •
enough in the evening •
Smells other than •
that caused during
commissioning
•
The heater has •
left black marks
on the wall
Unable to adjust •
any controls •
Has there been an interruption to mains power? A power cut during the off-peak period could affect the
charge taken by the heater.
Ensure that the off-peak circuit is working, the wall switch is on and the fuse is ok.
Turn up the BACKGROUND control (this may take up to 24hrs to take effect).
Turn up the COMFORT control (this will start to take effect immediately).
Has the heater been inadvertently covered? If so, the safety cut-out may have operated.
Please contact Customer Services if this is the case. A service call out will be necessary to reset the cut-out
and there will be a charge for the call out.
Do you have another heater nearby? If so please see 'One of my heaters is colder than the other' below.
The room temperature will have an effect on the charge taken, therefore if the room is already warm the
heater will not take an unnecessary charge.
Adjust the COMFORT setting down to determine if background is set too high.
Turn the BACKGROUND control down (this may take up to 24hrs to take effect).
If two heaters are fitted in one area, they may affect each other's operation.
Set one heater higher as a 'primary' source of heat, and the other lower to provide 'supporting' heat to
avoid the heaters cancelling each other out and taking a reduced charge.
Turn up the BACKGROUND control (this may take up to 24hrs to take effect).
Turn up the COMFORT control.
Apart from the commissioning period and perhaps after a long period of inactivity when there may be
an accumulation of dust within the heater, no smells should be present. One exception is when
decoration is being carried out, especially if the substances used have a petrochemical base.
If decorating is to be carried out, turn off the heater and ensure the room is well ventilated before the
heater is turned back on again.
Lit cigarettes, candles and oil burners, combined with the convection effect of a heater can
cause soot deposits to build up on the surface directly above and to the sides of the heater.
• Installing a shelf above the heater is one solution, as the heat rising above the heater will be diverted
away from the wall and into the centre of the room. Please ensure a minimum of 250mm clearance
between the top of the heater and the shelf.
Turn the power supplies off for five minutes and then switch them back on.
Check external controller if one is connected.
7