VisionPro IAQ - 3Ht/2Cl Heat Pump

Article ID: 486

Last updated: 6 Feb, 2023

Honeywell Thermostat: YTH9421 VisionPro IAQ

Re: Installer Setup - 3Ht/2Cl Heat Pump

To Enter Installer Setup:

From the home screen, press the System key. (Press Done or Cancel key to return to home screen.)
Five blank touch keys show on the bottom of the screen between the Done and Cancel keys. Press and hold the two blank keys on either side of the center blank key for approximately five seconds until screen changes.

Setup#	Description	Values
110	Zone Number	0 = Not Zoned
120	First 2 digits of Year	20
130	Last 2 digits of Year
140	Calendar Month	01 - 12
150	Day of the Month	01 - 31
160	Schedule Options	0=Non-Prog 4=Programmable
165	Energy Start Schedule	0 = No
172	System Type	2=Heat Pump
173	Heat Pump Type	0=Air to Air
174	Compressor Stages	2
176	Conv / Aux Stages	1
190	Reversing Valve	0=Cooling
200	Backup Heat	0=Electric
210	Fossil Fuel Control	1=External control
220	Compressor 1 CPH	3
230	Compressor 2 CPH	3
240	Heat 1 Cycles/Hr	6
280	Backlight	1=Continuous
290	Additional Choices	1=All Choices
300	Changeover Type	1=Automatic
310	Changeover Deadband	3
320	Temperature Scale	0=Farenheit
330	Daylight Savings	2=New Dates
340	Remote Temperature	0=None
342	Outdoor Temperature	0=None
350	Compressor Lockout	10
360	Aux Heat Lockout	50
365	Discharge Temp Sensor	E=Auto Discover
370	Humidity Sensor	1=Internal
372	Humidification	1=Humidify (no frost control)
374	Humidify Fan Action	0=Humidify w/ Fan or Heat
379	Dehumidify Control	1=Dehumidify w/ A/C
382	Dehumidify Modes	0=Dehum in Cool or Auto
383	Dehum Over-Cool Limit	1 Deg.
384	Dehumidify Fan Action	1=No Action
390	Dehumidify Away Mode	0=Disabled
400	Ventilation Control	0=None
500	Filter Reminder	0=Off
510	Humidifier Reminder	0=Off
520	UV Reminder	0=Off
530	Intelligent Recovery	1=On
540	Programmable Periods	2 or 4
550	# of Weekend Periods	4
560	# of Weekday Periods	4
580	Compressor Delay	3
600	Highest Heat Temp	82
610	Lowest Cool Temp	65
640	Clock Format	12=12 Hour
650	Extend Fan Time (Heat)	0
660	Extend Fan Time (Cool)	0
670	Keypad Lockout	0=Unlocked
680	Temperature Control (Heat)	2=Standard
690	Temperature Control (Cool)	2=Standard
700	Temperature Display Offset	0
701	Humidity Display Offset	0
710	Thermostat Reset	0=No reset

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Article ID: 486

Last updated: 6 Feb, 2023

Revision: 4

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