REMKO VRS 25 INOX - Manual (Page 22)

22
The unit does not start
à Check the power supply.
à Check the fuses in the control box.
Only for units in the 400 V, 3 phase current series.
à Check the temperature monitor .
à Check the safety temperature limiter.
à Keep in mind: before resetting the STB, it is abso-
lutely necessary to determine the reason it was acti-
vated and take appropriate measures.
The following are possible causes:
– The unit could not cool down because the power
supply was interrupted. Even short interruptions
can activate the STB.
– The temperature of the air being blown out is too
high because the grilles have not been properly
adjusted.
– The fan was overloaded and the thermal overcur-
rent relay of the 400 V series was activated or the
thermal contacts in the fan motor of the 230 V se-
ries were activated.
– The V-belt of the fan drive is loose or defective
– Air intakes and outlets are blocked.
à Check the operating and/or main switch.
à Check the room thermostat setting.
The room thermostat must be set higher than the
room temperature..
à Set the operating switch to “Lüften” (fan) or “II”.
If the air supply fan starts now, look for the problem
in the burner.
Troubleshooting
G For safety purposes, repair work on the electrical
components and the burner may only be per-
formed by authorised personnel.
The burner does not start
à Check whether the fuel filter is dirty.
à Check that all shut-off valves in the fuel supply are
open.
à Check that there is enough fuel in the fuel container.
à Check whether paraffin has accumulated in the heat-
ing oil or in the fuel filter.
This can occur at temperatures below 5 °C.
à Check oil lines for damage.
Leaks can cause air intake.
à Use suitable means to ensure that the safety tem-
perature limiter (STB) and the temperature monitor
(TW) are functioning properly.
à Check the sensors and capillary pipes of the triple
combination control for damage and ensure that the
sensor has been properly positioned.
à Check whether the burner malfunction control lamp
on the automatic burner relay is illuminated.
à Release the automatic burner relay by pressing the
malfunction button if the malfunction lamp lights up.
The malfunction light goes out and the burner tries to
start.
à Keep in mind that the units up to VRS 50 have a de-
layed start due to the oil preheating process.
The air supply fan does not start
à Set the operating switch to “Lüften” (fan) or “II”.
The air supply fan should now start.
à Check that the fan and the fan drive are running
smoothly.
à Check the V-belt on the fan drive.
à Check the electric cord on the fan motor for damage.
à Check whether the capacity of the fan was ex-
ceeded.
The thermal overcurrent relay (400 V series) or the
thermal contacts (230 V series) in the fan motor have
been activated.
à Check the operating capacitor of the fan.
Only for the 230 V series.
à Use suitable means to ensure that the fan control
thermostat (TR) are functioning properly.
Service and Guarantee
For the guarantee to be valid, the customer must com-
pletely fill out the “guarantee certificate” enclosed with
all heating units and send it back to REMKO GmbH &
Co. KG in a timely manner after purchasing of the unit
and putting it into operation.
The units have undergone several tests to ensure
proper functioning at the factory. If there are still mal-
functions that cannot be fixed by the operator using the
troubleshooting instructions, please contact your dealer
or contract partner.
Important information about resetting the burner
à If, during the start phase, the unit is switched off
again due to a malfunction, it may only be restarted
after 5 minutes have elapsed.
à Take any steps necessary to prevent another reset.
Danger of deflagration.
G Should the unit still not function properly after per-
forming these checks, please contact an author-
ised service centre.
G
Please carry out an electrical safety test after hav-
ing finished service on the unit.