York YHKMXH009BARR-FX Service Manual page 136

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Query indoor malfunction history:
In the state of power on or power off, press [CHECK] button, enter the malfunction-querying mode of all indoor units in
the group. Then [CHECK] and [UNIT NO.] will display, and the actual indoor numbers will be displayed in some sequence
(unit number is in decimals). At the same time, in the time region, there will be the current malfunction and the latest time
malfunction, the displaying format is [XX:YY], in which XX stands for the current malfunction, if normal, it will display "--";
YY stands for the latest time malfunction. The failure code of every unit will display for 3 seconds. After the failure codes
of all indoor units in the whole group are displayed, the mode will quit automatically.
How to change the function switches?
No. Type
Select the master or
SW1-1
the slave controller
Select the controller
SW1-2
mode
Room temperature
SW1-3
display option
o
SW1-4 26 lock
Temperature sensor
SW1-5
position option
SW1-6 Auto restart
SW1-7 Factory Seting
SW1-8 Factory Setting
1. Switches or jumper wire must be adjusted when the wire controller is powered off. If the wire controller is
Notes
powered on, the above operations will be invalid.
2. Function difference between master wire controller and slave one:
Contrastive Master wire
items controller
Function All of functions
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State of switch Function description
ON set as the slave controller
OFF set as the master controller
ON
standard controller
OFF
air handler controller
ON
visible room temperature
OFF invisible room temperature
ON
Unavailable 26
OFF
available 26
ON
Sensor of the controller
OFF Sensor in the unit
ON unavailable
OFF available
ON default setting
OFF default setting
Slave wire controller
Only with below functions: ON/OFF, MODE, FAN
SPEED, SET TEMP., SWING
o
lock
o
lock