Keston K130 Installation And Servicing Instructions page 32

WD52/0/1997
5.3 CONTINUITY CHECKING
START
Is there 230V at terminals
PL & SL?
Is there 230V at the ON/OFF
switch (both terminals )?
Is there 230V at the boiler
thermostat (both terminals)?
Is there 230V at the flow
ov erheat thermostat (both
terminals)?
Is there 230V at the thermal
fus e link (both terminals)?
Is there 230V at the flow high
limit thermostat (both
terminals)?
Is there 230V at the water
press. switch (both terminals)?
Is there 230V at the flue
protection thermostat (both
terminals)?
Is there 230V at the gas low
press. switch (both terminals)?
Installation & Servicing Instructions
Chapter 5 : Fault Finding
To check continuity connect one probe to a neutral
and use the other probe to check for 230V.
no
yes
no
yes
no
yes
no
yes
no
yes
no
yes
no
yes
no
yes
no
The Keston 130 Condensing Boiler
Check external controls and
supply.
Faulty switch - Replace.
Boiler is up to temperature.
Allow to cool OR pump not
running OR faulty thermostat -
Replace
Thermostat tripped - reset OR
faulty thermostat - Replace.
High cabinet temperature -
chec k all joints for products
leakage - Replace thermal fuse
High water temperature OR
faulty thermostat - Replace.
Check water level header
tank/system pressure OR faulty
switch - Replace
Thermostat tripped - reset OR
faulty thermostat - Replace.
Check gas supply to boiler OR
faulty switch - Replace.
Page : 29