gledhill ElectraMate 2000, Installation And Servicing Instructions

Page: 31 / 44

Supplied By www.heating spares.co Tel. 0161 620 6677
Page 31
ELECTR
AMA
TE
2000
3.0 SERVICING
3.4 FAULT FINDING
The operation of the ACB itself can be checked
as follows :
• Switch off mains.
• Check/insert correct jumpers i.e. across 2
and 4.
• Insert jumper 5.
• Switch on mains.
• The PCB will carry out functional tests
and then stop. LED’s 1-4 will be switched
ON then OFF at 5 second intervals and the
output number will be indicated on the LED
display. When complete the LED display will
be as follows :
• Switch off mains.
• Remove jumper 5.
• Switch on mains to put into normal mode.
If there is any discharge from the Pressure
Relief Safety Valve.
• Check that the system is not over-pressurised
when cold - nominal charge pressure should
be about 1.0 bar.
• Check that the air pressure inside the
expansion vessel is correct - refill with air if
necessary to nominal value of 1.0 bar when
the system is de-pressurised.
• Check that the expansion vessel is correctly
sized for the system volume.
• Check the pressure relief valve seat - replace
if necessary.
The boiler overheat thermostat will trip (pop-
out) if :
• TheBoiler pump is faulty.
• The control thermostat on PCB is faulty.
• The System is air locked i.e poor circulation
through electric boiler circuit.
Check and replace faulty parts and manually
push the reset button on the boiler overheat
thermostat.
If the store overheat thermostat has activated
or failed, it is important to check the boiler
pump and store temperature sensor are
working correctly. Remove the cap on the
STORE o/heat t/stat, if this has popped out
you must replace the BOILER o/heat t/stat.
Press the reset button and replace the cap on
the STORE o/heat t/stat. Check that the boiler
pump is operating and that the pump switches
off when the store temperature sensor is up
to its operating temperatures - see page 32
for details.
If the BOILER o/heat t/stat or the STORE
o/heat t/stat continue to activate then please
contact the manufacturers for advice.
WARNING : UNDER NO CIRCUMSTANCES
SHOULD THESE TWO SAFETY CONTROLS
BE MANUALLY HELD DOWN OR TAKEN OUT
OF CIRCUIT.