![background image](http://html1.mh-extra.com/html/york/cidh018b21s/cidh018b21s_service-manual_912416165.webp)
SM-18001-rev.1
5-35
EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
(116) Auxiliary Heater Setting (q1)
This function is utilized to activate/deactivate auxiliary heater operation.
When this function is valid, the “auxiliary heater” signal is output from indoor unit PCB connector
depending on indoor and outdoor temperature.
NOTES:
● “Auxiliary heater” signal does not output during Test Run.
● Fan delay will start for 120 seconds when the unit is turned OFF from the wired controller or during
defrost operation (when optional function L9 on the wired controller is set to "01").
● Fan delay will not start when an alarm has occurred.
● Airflow volume of indoor unit is restricted to HIGH or HIGH2 during the auxiliary heater ON is output.
● In case the auxiliary heater is connected and the setting is enabled, during following instances the
auxiliary heater alone without heat pump may operate in heating mode.
During Defrosting Operation
Low Ambient Temperature
(117) Auxiliary Heater ON Compensation (for Auxiliary Heater Setting) (q2)
This function is utilized to change the indoor temperature condition to activate auxiliary heater.
This function is invalid when the function of "Auxiliary Heater Setting" is invalid.
Setting Condition
Actual Control Temperature
00 (Standard)
Wired Controller Setting Temperature (Indicated Value) -3
o
F (-1.5
o
C)
01
Wired Controller Setting Temperature (Indicated Value) -3
o
F (-2
o
C)
02
Wired Controller Setting Temperature (Indicated Value) -4
o
F (-2.5
o
C)
03
Wired Controller Setting Temperature (Indicated Value) -5
o
F (-3
o
C)
04
Wired Controller Setting Temperature (Indicated Value) -6
o
F (-3.5
o
C)
05
Wired Controller Setting Temperature (Indicated Value) -7
o
F (-4
o
C)
06
Wired Controller Setting Temperature (Indicated Value) -8
o
F (-4.5
o
C)
07
Wired Controller Setting Temperature (Indicated Value) -9
o
F (-5
o
C)
08
Wired Controller Setting Temperature (Indicated Value) -1
o
F (-0.5
o
C)
09
Wired Controller Setting Temperature (Indicated Value) -2
o
F (-1
o
C)
(118) Auxiliary Heater OFF Compensation (for Auxiliary Heater Setting) (q3)
This function is utilized to change the indoor temperature condition to deactivate auxiliary heater.
This function is invalid when the function of "Auxiliary Heater Setting" is invalid.
Setting Condition
Actual Control Temperature
00 (Standard)
Wired Controller Setting Temperature (Indicated Value)
01
Wired Controller Setting Temperature (Indicated Value) +1
o
F (-0.5
o
C)
(119) Ambient Temperature Restriction Setpoint (for Auxiliary Heater Setting) (q4)
This function is utilized to change the outdoor ambient temperature condition to Thermo-OFF and
operate with auxiliary heater only.
If the ambient temperature is below (q4), the operation is forced thermo-OFF. With this function,
heating operation is performed only by the auxiliary heater. There is no air conditioner operation.
This function is invalid when the function of "Auxiliary Heater Setting" is invalid.
Setting Condition
Setting Temperature (q4)
00 (Standard)
-4
o
F
(-20
o
C)
01
2
o
F
(-17
o
C)
02
8
o
F
(-13
o
C)
03
14
o
F
(-10
o
C)
04
20
o
F
(-7
o
C)
05
26
o
F
(-3
o
C)
06
32
o
F
(0.0
o
C)
07
-13
o
F
(-25
o
C)
08
-8
o
F
(-22
o
C)
NOTE:
Be sure to use only the "00" setting condition when combining this "q4" function with a water source
unit.
Summary of Contents for CIDH018B21S
Page 2: ......
Page 10: ...viii SM 18001 rev 1...
Page 15: ...SM 18001 rev 1 1 1 INSTALLATION 1 Installation...
Page 19: ...SM 18001 rev 1 2 1 OPERATION 2 Operation...
Page 22: ......
Page 23: ...SM 18001 rev 1 3 1 TROUBLESHOOTING 3 Troubleshooting...
Page 75: ...MAINTENANCE SM 18001 rev 1 4 1 4 Maintenance...
Page 130: ......
Page 172: ......
Page 173: ...SM 18001 rev 1 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions...
Page 182: ...6 10 SM 18001 rev 1 FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A f t 3 l b...
Page 183: ...SERVICE PARTS LIST SM 18001 rev 1 7 1 7 Service Parts List...
Page 185: ......
Page 186: ...2018 Johnson Controls Inc SM 18001 rev 1 Code No LIT 12013047 Revised February 2019...