Mitsubishi Electric EHPT20Q-VM2EA Service Manual page 70

DISASSEMBLY PROCEDURE
12. How to remove the flow sensor1(primary circuit)
< Flow Sensor 1 >
(1) Remove the front panel.
(2) Disconnect the CN1A connector in the controller
box. (Photo 12-2 and 12-3)
(3) Release the flow sensor lead wire from the cable
clamps and the bands below the control box.
(Photos 12-2 and 12-4)
(4) Open the pressure relief valve caps and lower
the tank internal pressure.(Photo 12-5)
Photo 12-2
Photo 12-4
GCH15010
Photo 12-1
Photo 12-3 (Larger scale of the A part)
A
B
cable
clamps
Photo 12-5
cable band
70
PHOTOS
Flow sensor 1
Flow sensor B Flow sensor A
CN1A connector
pressure relief valve caps