BYPASS EXTERNAL CONTROLS

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

CH Demand

Selector switch set to CH/DHW position
Boiler CH thermostat set to MAX
Insert a link wire to bypass the external controls as indicated by the red wire

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure

Mains Power On

Observation:

Does the pump run ?
Note:
Do not take sound or vibration as an indication that the pump is running.

vk.sabre 35he.ter.ext.controls.bypassed.gif

Note:
The external controls may be wired into the terminal block different to that shown, therefore you may need to trace the wires for the external controls.