User manual P 40 - P 120
Issue: 10.10
9 Dealing with faults
Page 19
9 Dealing with faults
If the heater develops a fault, it will lock out completely and the red lockout indicator light on the BCU will
come on. The heater can be started again by pressing the lockout-reset button on the BCU. However, if
the fault is not corrected, the heater will simply lock out once more.
NOTE
If the heater should lock out repeatedly, do not press the lockout-reset button
more than three times. If the heater keeps locking out, isolate it from the mains
electrical supply by removing the mains plug from the socket and contact an
approved engineer.
• Remember that heaters only lock out when there is something wrong. So if your heater locks out, it
may be faulty, there may be a problem with the heating system as a whole or with the room or space
in which the heater is being used.
• If a component (e.g. the oil atomising nozzle, pump or photocell) needs to be replaced, the new
component must be of an identical type. Failure to use the correct component may compromise the
heater's safety or performance.
Fault Diagnosis
Turn the heater on (press the lockout reset button), then make the following checks:
1. Is the electric motor running?
2. Is there a good ignition spark?
3. Does the oil valve open after about fifteen seconds? (Audible by click)
4. Does the burner light?
5. Does ignition spark disappear about two seconds after igniting the burner?
If any of these reveal a problem, you are half way to finding out what is wrong.
The big red LED on the BCU shows a malfunction. The internal malfunction contact (21,22) closes.
The kind of malfunction is shown by the flashing red LED’s (No. 1-5). See next page.
To reset the appliance the red button should be pushed for at least 1/2 a second.
•
High-tension danger! Disconnect power before working on this heater!
•
Only authorised people should
•
Do not try to repair the BCU, guarantee will be void and a safe operation
cannot be guaranteed!
•
To (remotely) reset the heater in principle only by authorised personnel and
under supervision of the heater.
