York DHP30NWB21SDCP30NWB21SDHP36NWB21SDCP36NWB21S Service Manual page 38

Service Manual
Notes:
(1) When the Blow function is activated, if turning off the unit by pressing On/Off or by the remote controller, the indoor fan will run at
the low fan speed for 2 min, with "BLOW" displayed on the LCD. While, if the Blow function is deactivated, the indoor fan will be
turned off immediately.
(2) Blow function is unavailable in the Fan or Heating mode.
3.11 Other Functions
a. Lock
Upon startup of the unit without malfunction or under the "Off" state of the unit, press ▲ and ▼ at the same time for 5s until the wired
controller enters the Lock function. In this case, LCD displays
After that, repress these two buttons at the same time for 5s to quit this function.
Under the Lock state, any other button pressed won't get a response.
b. Memory
Memory switchover: Under the "Off" state of the unit, press Mode and ▲ at the same time for 5s to switch memory states between
memory on and memory off. When this function is activated, Memory will be displayed. If this function is not set, the unit will be under the
"Off" state after power failure and then power recovery.
Memory recovery: If this function has been set for the wired zone controller, the wired zone controller after power failure will
resume its original running state upon power recovery. Memory contents: On/Off, Mode, set temperature, set fan speed and lock
function.
4. Installation and Dismantlement
4.1 Connection of the Signal Line of the Wired Zone Controller
● Open the cover of the electric control box of the indoor unit.
● Let the single line of the wired zone controller through the rubber ring.
● Connect the signal line of the wired zone controller to the 4-pin socket of the indoor unit PCB.
● Tighten the signal wire with ties.
● The communication distance between the mainboard and the wired zone controller can be up to 20 meters (the standard distance
is 8 meters).
4.2 Installation of the Wired Zone Controller
No.
Socket box embedded
Name
in the wall
PVC Pipe
Fig.4.1 Accessories for the Installation of the Wired Zone Controller
1 2
Soleplate of the
Wired Zone Controller
.
1 2
3
Front Panel of the
Screw M4X25
Wired Zone Controller
3 4 5
4 5
Screw ST 2.9X6
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