andrews MAXXflo EVOCWH 120/302 Installation And Maintenance Manual page 60

6.2.2 FLUE TEMPERATURE SENSOR (B8)
This is located at the Flue outlet of the heat exchanger.
• Unplug the sensor from the loom (squeeze the catch to release).
Connector
• Remove sensor by unscrewing anti-clockwise
• Replacement is the reverse.
6.2.3 COMMON FLOW TEMPERATURE SENSOR (B10)
This is located on the top left hand side of the case, to the left of the top control PCB
• Unplug the sensor from the loom (Squeeze the catch to release).
Common fl ow sensor
6.2.4 AVS37 GUI DISPLAY
This is located in the centre of the heater inside the front cover.
• Switch off electrical supply to heater
• Remove the 4 fi xing screws located at the rear of the screen.
Securing screws
• Push off the wiring connector from the rear of the GUI
• Replacement is the reverse.
Maintenance
Flue sensor
60
Connector
MAXXfl o EVO