First Steps To Take In Case Of Failure - Hamworthy Melbury HE 530 Installation And Operating Instructions Manual

8.3.

First steps to take in case of failure

In the event of system operational failure, perform the checks in the table below. Also check the governor set-up.
If the failure cannot be eliminated, call a reliable engineer or your support service.
Problem
Burner not functioning
Heating elements fail to heat up Incorrect operation type setting on
We reserve the right to make changes to dimensions and construction
Melbury HE, C 530 - 3000
Possible cause
No power
Burner LED is on
No oil
Gas pressure insufficient
Overheat temperature LED is on.
Safety thermostat has come into
operation
External default LED is on.
governor
Circulation pump blocked
Water level or system pressure
Shut-off elements on supply and
return lines closed
Solution
Check fuse, switch on main or safety
switch. Connect supply and burner plug
Press burner reset button
Add oil
Call the gas board
Fix the cause, wait until temperature has
dropped below overheat setpoint then
reset the safety thermostat by pushing
the pin
Fix the cause
Set up type of operation and heating
program
Remove locking screw, turn shaft until
no more resistance is left
Top up and ventilate
Open them
30
Hamworthy Heating Limited – Dorset BH17 ONF
edition 12.2020