Munster Simms Engineering Ltd.
, 2 Enterprise Road, Bangor, Co Down, BT19 7TA, U.K.
–
Northern Ireland
tel.: +44 (0)2891 270 531
fax.: +44 (0)2891 466 421
www.whalepumps.com
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Water Heater
•
Check there is water in the appliance.
o
Ensure the following
▪
Water Pump is connected
▪
Pump Isolator Switch is turned on
▪
Drain Valve is closed
▪
When the hot tap is opened water comes out.
Run the Heater and check if it
overheats.
•
Overheating when operating on gas?
o
Ensure Heater is filled with water
o
Check temperature sensor
o
Check over-heat stat
–
should be normally closed circuit.
Run the Heater and check if it
overheats.
•
Limescale
–
electric only
Should a fizzing/popping/boiling noise be noticeable, the element
is most likely covered in limescale.
•
Regular flush out for limescale is recommended if in hard water
areas. Inspection for limescale should be part of annual
maintenance checks.
Clean and flush/ purge system.
Replace element if unable to
remove the limescale build up.
4.1.1.5
–
3 Flashes/Bars: Low/High supply voltage
Process
Actions
•
Try to clear lockout (see 4.1.1).
This should cure most simple
problems.
•
Check battery voltage on Control Panel and supply at the Heater.
•
Check battery terminals are tight and have a sound connection.
•
Check output from PSU and the wire gauge is correct.
•
Have either a generator/ motor mover been in use?
•
Where two batteries are fitted, ensure they are correctly wired in
parallel, not in series as this will increase the voltage.
•
Solar Panel - check supplies to the system from the charge
controller/ switch. Ensure no more than 15 volts is supplied during
periods of high levels of sunshine.
•
Panel may need to be removed from system to check Heater.
If the voltage is below or around
10.4V charge the battery.
If the voltage is above 14.5V, then
there is a power supply issue.
Check alternator/ external battery
charging/ solar over charge.
4.1.1.6
–
5 Flashes/Bars: Water Heater issues
Process
Actions
•
Try to clear lockout (see 4.1.1).
This should cure most simple
problems.
•
Test Loom and Panel
NOTE:
-PCB should have no jumper connected to location CN8.
-Check thermistor plug is fully engaged in PCB connection.
Check using test loom and panel
by Service Engineer.
If not successful carry out
continuity
test
by
Service
Engineer.
•
Replace PCB
Change the PCB by Service
Engineer.
4.1.2 Clear lockout procedure iVan Control Panel
iVan is equipped with an electronic diagnostic system which will detect fault conditions ranging from
poor gas or d.c. supply to internal Water Heater malfunctions. In the unlikely event of a fault, this
will be indicated by a
red ‘
!
’ on the Water
Heater icon on the Home Screen.