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Electric Boilers
CHECKING ELECTRICAL CONNECTIONS
It is important before powering on the boiler for the first time that all electrical connections are checked, this
is not only your own connections but also the factory made ones too. Whilst all factory made connections are
tested at the factory it is possible that during transit or installation connections may have come loose.
For Screwed connections please check for cable movement and tighten with a Screwdiver if necessary and for
ribbons and push plastic connectors please gently apply pressure to make sure they are firmly seated. Please
check the following connections:
1. The main power supply connections to the unit, both installer and factory made.
2. The spade connections labelled as number 14 on the PCB control board opposite.
3. The thermostat connections labelled as number 1 on the PCB control board opposite.
4. Push connectors labelled 3 - 12 if present on the PCB control board opposite.
5. All terminations on the heating elemement (these are the braided connections).
6. All connections made on the PCB above the heating element (these are braided connections).
7. All terminations on the hot water elements (these are the braided connections) - Combi only.
8. All earth terminations both factory made and installer made.
