Dhw Tank Temperature Sensor (B3); Lms14 Control Pcb - andrews MAXXflo EVO Lite Installation And Maintenance Manual

a
b
c
d
e
f
10 Maintenance

10.4.3 DHW tank temperature sensor (B3)

Perform the following tasks to remove the Tank sensor B3:
1. Remove tank sensor access panel located at the bottom left hand side
of the heater, to reveal the tank (a)
2. Loosen the screw (c) securing the sensor in the sensor well
3. Gently pull the sensor and it's cable (b) out of the sensor well, feed it
through the "P" clip and allow it to hang free
4. Undo the bulkhead seal (d) and pull the sensor up and out through the
bulkhead seal
5. Unplug connector (e).
6. Replacement is the reverse
Important
When resecuring the sensor back into the sensor well, create a
slight tension in the cable by pushing a small excess of the cable
through the "P" clip, so that the sensor is being pushed into the
end of the sensor well.

10.4.4 LMS14 Control PCB

CAUTION
Electrostatic sensitive PCB - Handle PCB by edges only and if
available wear an earth wristband
This is located inside the electrical enclosure to the top left of the heater.
It is important that the correct PCB replacement is used. Check that the
model matches the replacement PCB.
1. Undo but do not remove the screw securing the cover of the electrical
enclosure and lift away the cover.
2. Carefully push off all the connectors from the PCB (be careful not to
pull on the wires).
3. Release in turn, all seven PCB support posts (f) by squeezing the barb
together at the end of the support post and withdrawing the board from
each support, one at a time until the PCB is free.
4. Replacement is the reverse.
83 MAXXfl o EVO Lite