York IDM030B21E Series, Service Manual

Page: 123 / 144

SM-16005-rev.2
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.