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Replacing the water coil (AR300W)
1. Shut off the water supply to the unit.
2. Disconnect the connections to the water
coil.
3. Remove the mounting screws securing the
coil in the unit and lift the coil out.
4. Install the new coil in reverse order to the
above.
Draining the water coil (AR300W)
The drain valve is on the underside of the coil
on the connector side. It can be accessed via
the service hatch.
Trouble shooting
If the fans are stationary, check the following:
1. Operating power supply to the unit;
check fuses, circuit-breaker, time switch/
thermostat (if any) that starts and stops the
unit.
2. That the air flow selector is correctly set.
3. That the position limit switch is working.
4. That the overheat protection for the motors
has not been deployed.
5. That the intake grille is not dirty.
AR300E
If there is no heat, check the following:
1. Power supply to electric heater coil; check
fuses and circuit-breaker (if any).
2. That the heat demand exists; check
thermostat settings and actual temperature.
3. That the intake grille is not dirty.
AR300W
If there is no heat, check the following:
1. That there is hot water to the water
coil. (Check the circulation pump - if
applicable.)
2. That the heat demand exists; check
thermostat settings and actual temperature.
3. That the intake grille is not dirty.
If the fault cannot be rectified, please contact
a qualified service technician.
AR 300 E/W
Safety cut-out
(applies to units with electric heater)
If the installation is protected by means of a
safety cut-out, which trips when the appliance
is connected, this may be due to moisture
in the heating element. When an appliance
containing a heater element, has not been
used for a long period and is stored in a damp
environment, moisture can enter the element.
This should not be seen as a fault, but is
simply rectified by connecting the appliance
to the mains supply via a socket without a
safety cut-out, so that the moisture can be
driven out of the element. The drying time
can vary from a few hours to a few days.
As a preventive measure the unit should
occasionally be run for a short time when it is
not being used for extended periods of time.
Safety
• Keep the areas around the air intake
and exhaust grilles free from possible
obstructions!
• During operation the surfaces of the unit
are hot!
• The unit must not be fully or partially
covered with clothing, or similar
materials, as overheating can result in a
fire risk! (AR300E)
• This appliance is not intended for use by
persons (including children) with reduced
physical, sensory or mental capabilities,
or lack of experience and knowledge,
unless they have been given supervision
or instruction concerning use of the
appliance by a person responsible for
their safety. Children should be supervised
to ensure that they do not play with the
appliance.
Technical data is on p. 10.
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