Removing Electronic Expansion Valve Coil; Removing Float Switch - York HIDS006B21S Service Manual

MAINTENANCE
(Ducted Medium Static Type)
4.2.2.5

Removing Electronic Expansion Valve Coil

(1) Remove the service cover according to Section 4.2.2.4 "Removing Thermistors for Liquid Pipe and
Gas Pipe".
(2) Remove the detents of the expansion valve coil from the projection parts of the valve body by rotating
the valve coil. Pull up the valve coil and remove it. At this time, take care not to twist the pipes.
(3) Insert the new expansion valve coil into the expansion valve body. When inserting the valve coil,
secure the projection parts into the detents.
NOTE:
The detents are located 90
Make sure to fit the projection parts into the detents. The position of rotation direction does not affect
the operation. If the valve coil is inserted incorrectly, it may cause malfunction of the valve coil.
(4) When the replacement is completed, secure the wire for the expansion valve coil near the valve coil
with a plastic band. At this time, secure the edge of lead
wires for the expansion valve coil to
face down.
4.2.2.6

Removing Float Switch

(1) Remove the service cover according to Section 4.2.2.4 "Removing Thermistors for Liquid Pipe and
Gas Pipe".
(2) The float switch is secured on the heat exchanger mounting plate.
Remove the float switch using two wrenches.
ATTENTION:
When reassembling, handle the float switch carefully.
(Tightening Torque: Approx. 0.2lbf
If the float switch is dropped, malfunction will occur.
4-24
TURN OFF all POWER supply switches.
o
apart in a circle and the projections are located 180
Expansion Valve Coil
Detent
Expansion Valve Body
Projection
Float Switch
ft (0.3N m))
● ●
Tool Phillips Screwdriver
Tool Phillips Screwdriver, Wrenches
o
apart in a circle.
SM-18001-rev.1