Bosch 8-733-944-325 Guide

Bosch Programmable Thermostat
2H/2C/Hum Touch-Technology Thermostat
Installation, Operation & Application Manual

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|Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual
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Data subject to change

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Table of Contents
1 Key to symbols and safety instructions 4
1.1 Key to symbols 4
1.2 Safety 4
2 Thermostat specifications and features 5
2.1 Thermostat Controls 5
2.2 Thermostat features 5
2.3 Package contents/tools required 5
2.4 Specifications 5
3 Installation 6
3.1 Removing existing thermostat 6
3.2 Battery installation and information 6
3.3 Installing thermostat 6
4 Wiring diagram 7
4.1 Terminal designator descriptions 7
5 System setup and configuration 8
5.1 Connection to the UPM 8
5.2 Configuration of the UPM 8
5.3 Output chart 8
5.4 Humidity output chart 8
5.5 Locking & unlocking thermostat 9
5.6 Changing the lock code 9
5.7 Configuration mode 9
5.8 Configuration mode settings 9
6 Mode of operation 14
6.1 Icon functions 14
6.2 Operating modes 15
6.3 Testing the thermostat 16
6.4 Testing the thermostat humidity control 16
6.5 Setting the time and date 17
6.6 Setting the program schedule 17
6.7 View screen options 18
6.8 Viewing fault codes 19
6.9 Schedule override 20
6.10 Setting the vacation timer 20
7 Factory preprogramming 21
8 Troubleshooting 22

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1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
Warnings in this document are identified by a warning triangle
printed against a grey background.
Keywords at the start of a warning indicate the type and seriousness
of the ensuing risk if measures to prevent the risk are not taken.
The following keywords are defined and can be used in this document:
DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
NOTICE is used to address practices not related to personal injury.
Important information
This symbol indicates important information where
there is no risk to people or property.
1.2 Safety
Please read before proceeding
WARNING:
Always turn off power at the main power supply before
installing, cleaning, or removing thermostat.
Read this manual carefully before installing or operating your new
thermostat. Make sure to save this manual for future reference.
WARNING:
This thermostat is for 24 VAC applications only; do not use on
voltages over 30 VAC.
Do not short across terminals of gas valve or system control
to test operation; this will damage your thermostat and void
your warranty.
All wiring must conform to local and national electrical and
building codes.
WARNING:
Do not use air conditioning when the outdoor temperature
is below 50 degrees; this can damage your A/C system and
cause personal injuries.
WARNING:
Use this thermostat only as described in this manual.
WARNING: CLEANING AND MAINTENANCE
Turn off the device and pull the plug before cleaning. Failure
to do so can cause electrical shock.
Do not clean the air conditioner with excessive amounts of
water.
Do not clean the air conditioner with combustible cleaning
agents. Combustible cleaning agents can cause fire or
deformation.

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2 Thermostat specifications and features
2.1 Thermostat Controls
Left Arrow
(Go Back)
Alarm Indicator
Check Filter
Indicator
Right Arrow
(Forward)
Down Arrow
Up Arrow
HomeMode (Hea t /C ool) Fan Schedule
CALL
SERVICE
TECH
Menu
Figure 1
2.2 Thermostat features
7-Day, 5-2-Day, or 5-1-1- Day Programmable
Configurable for Multiple Systems
Large Display with Backlight
Selectable Fahrenheit or Celsius
Icon Indicator Lights
Relay Outputs – Minimum Voltage Drop in Thermostat
Remote Sensor Compatible
Ideally Suited for:
—Residential (New Construction/Replacement)
—Light Commercial
Service Alarm
Fault Detection and History
2.3 Package contents/tools required
Package includes:
Thermostat, base
Wiring labels
Screws and wall anchors
2 “AA” Alkaline batteries
Installation, Operation and Application Manual
Tools required for installation:
Drill with 3/16” bit,
Hammer
Screwdriver
2.4 Specifications
Description Value
Electrical Rating: 24 VAC (18-30 VAC), 1 amp maximum per output terminal,
5 amp maximum total load
DC Power: 3.0 VDC (2 “AA”Alkaline batteries)
Temperature Control Range: 45°F to 90°F (7°C to 32°C) Accuracy: ±1°F (±0.5°C)
Humidity Control 10% - 80%
Anti-short Cycle
4 minutes (bypass anti-short cycle delay by returning to
OFF mode and pressing the icon).
Backlight Operations: 15 seconds
Table 1

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3 Installation
3.1 Removing existing thermostat
DANGER: ELECTRICAL SHOCK HAZARD
Turn off power at the main service panel by removing the fuse
or switching the appropriate circuit breaker to OFF position
before removing the existing thermostat.
1. Turn off power to heating and cooling system by removing the fuse or switching
the appropriate circuit breaker off.
2. Remove cover of old thermostat; this should expose the wires.
3. Label the existing wires with the enclosed wire labels before removing wires.
4. After labeling wires, remove wires from wire terminals.
5. Remove existing thermostat base from wall.
6. Refer to the following section for instructions on how to install this thermostat.
3.2 Battery installation and information
Two “AA” alkaline batteries are used for backup power only. They are installed into the
back of the thermostat. Orient them in the correct direction as shown on the plastic
thermostat case.
The batteries should be changed yearly to prevent leakage from damaging the
thermostat and voiding your warranty.
If the batteries are not changed or low and the thermostat is not connected to 24
VAC or loses 24 VAC power, the thermostat will eventually display and conserve
energy by maintaining a lower setpoint in heating and a higher setpoint in cooling.
3.3 Installing thermostat
DANGER: ELECTRICAL SHOCK HAZARD
Turn off power at the main service panel by removing the fuse
or switching the appropriate circuit breaker to OFF position
before removing the existing thermostat.
CAUTION:
Thermostat installation must conform to local and national
building and electrical codes and ordinances.
Mount the thermostat about five feet above the floor. Do not mount the
thermostat on an outside wall, in direct sunlight, behind a door, or in an
area affected by a vent or duct.
1. Turn off power to heating & cooling system by removing the fuse or switching
the appropriate circuit breaker off.
2. To remove sub base, pull it from the thermostat.
3. Put thermostat sub base against the wall where you plan to mount it (be sure
wires will feed through the wire opening in the sub base of the thermostat).
4. Mark the placement of the mounting holes.
5. Set thermostat sub base and thermostat away from working area.
6. Using a 3/16” drill bit, drill holes in the places you have marked for mounting.
7. Use a hammer to tap supplied anchors in mounting holes.
8. Insert stripped, labeled wires in matching wire terminals. Tighten screws to
secure wires.
CAUTION:
Be sure exposed portion of wires does not touch other wires.
9. Gently tug wire to be sure of proper connection. Double check that each wire
is connected to the proper terminal.
10. Install 2 “AA” batteries into back of thermostat.
11. Snap thermostat onto the sub base.
12. Turn on power to the system at the main service panel.
13. Configure thermostat to match the type of system you have.
14. Test thermostat operation as described in “Testing the Thermostat”.

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4 Wiring diagram
T
H
E
R
M
O
S
T
A
T
A
RH
RC
C
Y1
W1
O/B
G
W2
Y2
UPM
Transformer
120 VAC
Fan
Heat #2
24 VAC
AUXDe(humidifier)
Cool/Compressor #1
Cool/Compressor #2
Heat #1/Reversing Valve
OUT
COM
ALR
Figure 2
Factory installed jumper between RH and RC is required.
Thermostat is powered between RH & C.
4.1 Terminal designator descriptions
A– Alarm/display (24 VACinput, switched from RH)
RC, RH – 24 VAC hot
C– 24 VAC common
Y1 – 1st stage cool, 1st stage heat for heat pumps
Y2 – 2nd stage cool for 2-stage or 2-compressor systems. 2nd stage heat
for 2-stage or 2-compressor heat pump systems.
G– Fan
W1/O/B – Configurable
—W1 – 1st stage heat for non-heat pump systems
—O– Cool active reversing valve
—B– Heat active reversing valve
W2 – 2nd stage heat for 1 compressor heat pump and non-heat pump
AUX – Humidifier or dehumidifier

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5 System setup and configuration
5.1 Connection to the UPM
The UPM’s ALARM COM terminal should be connected to R on the UPM board
(refer to unit manual for more information), and the ALARM OUT terminal should
be connected to the A terminal on the thermostat. The UPM must be configured as
described in Section 5.2.
5.2 Configuration of the UPM
The ALARM DIP switch on the UPM has to be set to the ON position (“PULSE”).
Simply push the right side of this switch, so it is down on the right side and up on the
left side.
OUTCOM
ALR
DISPLAY
4321
LOCKOUT
RESET
ALARM
TEST
4
R
CONT
YES
2
Y
PULSE
NO
UPM
A
RH
RC
C
Y1
W/O/B
G
W2
Y2
AUX
Thermostat Back Plate
Figure 3
5.3 Output chart
The thermostat is configurable for all systems. The configuration directly affects the
outputs. Use the output chart to correctly configure and wire the thermostat to your
system.
Description 1st Cool 2nd Cool 1st Heat 2nd Heat
Heat/Cool Y1, G YI, Y2, G W1, G* W1, W2, G*
Heat Pump
(one compressor) Y1, G, O Y1, G, O Y1, G, B Y1, W2,
G, B
Heat Pump
(two compressors) Y1, G, O Y1, Y2,
G, O Y1, G, B Y1, Y2,
G, B
Emergency Heat
(heat pump only) N/A N/A W2, G N/A
Table 2
* G not on for gas/oil systems
5.4 Humidity output chart
(De)humidification Setting With Humidity Control Demand
No N/A
Humidification
Only
Heat W
Heat-Fan W and/or G
Dehumidification
Only
Cool-No G only
Cool-Fan Y and/or G
Table 3
When in dehumidification mode and EAC is set to Cool-2, Y2 will energize
to extend cooling cycle. See Configuration menu section
5.5 Configuration and thermostat lock
During Configuration Mode, certain settings are protected by a numeric code access
screen to prevent unintentional changes that could potentially damage the system or
create a dangerous condition.
Whenever changes are attempted to one of the critical settings, the unlock code
screen will appear:
The unlock code for these critical settings can be found during the power-up
sequence.
The large number (indicated by “98” in the diagram) is the code that will unlock
the desired configuration setting. The smaller numbers (indicated by “93” and
“82” in the diagram) are codes used to lock and unlock your thermostat to prevent
tampering.
To view the default codes for your thermostat, remove the thermostat from the
sub base and, if using batteries, remove one battery for 10 seconds. Replacing the
batteries or reinstalling thermostat will cause the codes to display for approximately
5 seconds.
Write your
codes here
Thermostat lock code
Figure 4

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5.5 Locking & unlocking thermostat
Press , then , then
MENU
LOCK, then
Use & to select digit.
Use & to set number.
Press to lock or unlock.
5.6 Changing the lock code
To change the lock code, do the following:
1. Press , then press until Lock menu displays.
2. Enter the current lock codes. To find the current lock codes, follow the
instructions under “Configuration and Thermostat Lock”.
3. Press to enter new lock codes.
4. Enter new lock codes.
5. Press . The Lock Codes have been updated.
Upon subsequent power ups, new lock codes will display.
5.7 Configuration mode
The configuration mode is used to set the thermostat to match your heating/cooling
system. The thermostat functions with heat pump, air conditioning, gas, oil, or
electric heat systems. To configure the thermostat, perform the following steps:
1. Press , then press repeatedly until is selected.
2. Press to advance from one screen to the next.
Pressing will return you to the previous screen.
3. Press the or to change settings within each screen. Changes are
saved automatically.
4. To exit configuration mode, press . Auto exit occurs after two minutes
with no icons touched.
5.8 Configuration mode settings
The setup screens for Configuration Mode are as follows:
Temperature Scale (F or C)
—Choose Fahrenheit or Celsius.
—Press the or to select.
—Press to advance to the next screen.
CONFIG
Figure 5
1st Stage Temperature Differential (1°F to 5°F) (0.5°C to 2.5°C)
—Set the number of degrees between your “setpoint” temperature and
your “turn on” temperature.
—Press the or to set differential value.
—Press to advance to the next screen.
CONFIG
Figure 6
2nd Stage Temperature Differential (1°F to 5°F) (0.5°C to 2.5°C)
—Set the number of degrees between when stage 1 turns on and when
stage 2 turns on.
—Press the or to set differential value.
—Press to advance to the next screen.
CONFIG
Figure 7

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Staged Off Outputs
—Select whether the outputs for heating and cooling are staged off
independently or are
satisfied simultaneously.
—= Outputs off simultaneously (best for dual fuel). =
Outputs staged off independently.
For 2 compressor heat pumps and multi-stage gas/oil systems, stage 3 is
staged off independently when SO is set to .
—Press the or to set.
—Press to advance to the next screen.
CONFIG
CONFIG
Figure 8
Minimum Deadband (1°F to 9°F) (1°C to 5°C)
—Set the minimum separation between heat setpoint and cool setpoint
in Auto Changeover Mode.
—Press the or to set deadband value.
—Press to advance to the next screen.
CONFIG
Figure 9
Heat Source: There are six heat source settings:
WARNING:
Incorrect settings can damage system and/or cause
potentially dangerous conditions. Use the code described in
Configuration and Thermostat Lock.
Non-Heat Pump
CONFIG
Electric
CONFIG
Gas
Figure 10
Heat Pump
CONFIG
Heat Pump with
2 stage or 2 compressors
and Heat Active
Reversing Valve
CONFIG
Heat Pump with
2 stage or 2 compressors
and Cool Active
Reversing Valve
CONFIG
Heat Pump with
1 compressor single stage
and Heat Active
Reversing Valve
CONFIG
Heat Pump with
1 compressor single stage
and Cool Active
Reversing Valve
Figure 11

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Auxiliary Delay ON (0-60 minutes)
—Set the delay time in minutes for auxiliary heat to be locked out after a
call for second stage. This extra savings feature is used to temporarily
lock out auxiliary heat devices, allowing just heat pump to try to satisfy
heat call.
—Press the or to select. Press to advance to the next
screen.
CONFIG
HEAT
Figure 12
Lockout (0-8°, SLEEP, COOL-HEAT)
—Select the number of degrees set temperature can be changed during
keypad lockout. SLEEP setting locks thermostat only during the sleep
period to prevent after hours tampering.
COOL-HEAT lockout allows adjustment of the set temperatures to
the maximum heat set temperature selected and minimum cool set
temperature selected.
The mode cannot be changed while the thermostat is locked.
Press the or to select. Press to advance to the next screen.
CONFIG
Figure 13
Maximum Heat Setpoint (45°F to 90°F) (7°C to 32°C)
—Adjust to control the maximum heat set temperature allowed.
—Press the or to select. Press to advance to the next
screen.
CONFIG
HEAT
Figure 14
Minimum Cool Setpoint (45°F to 90°F) (7°C to 32°C)
—Adjust to control the minimum cool set temperature allowed.
—Press the or to select. Press to advance to the next
screen.
CONFIG COOL
Figure 15
Vacation Cooling Setpoint
—These work in conjunction with the Schedule mode where you set the
date and time of your RETURN from vacation.
—Until that date/time, system will remain at the cooling setpoint
specified here.
—Press the or to select. Press to advance to the next
screen.
CONFIG COOL
VACATION
Figure 16
Vacation Heating Setpoint
—These work in conjunction with the Schedule mode where you set the
date and time of your RETURN from vacation.
—Until that date/time, system will remain at the heating setpoint
specified here.
—Press the or to select. Press to advance to the next
screen.
CONFIG
HEAT
VACATION
Figure 17

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Room Temperature Offset (+9°F to -9°F) (+4.5°C to -4.5°C)
—Adjust to calibrate displayed room temperature to match actual room
temperature.
—Press the or to select. Press to advance to the next
screen.
CONFIG
Figure 18
Maximum Cycles Allowed Per Hour (- -, 2-6)
—= as many as needed, 2-6 = maximum cycles/hour
—Press the or to select. Press to advance to the next
screen.
CONFIG
Figure 19
Humidification/Dehumidification (Hu, dE)
—Set system configuration to work with a humidifier or dehumidifier
(including air conditioner).
CAUTION:
Incorrect settings can damage system and/or cause
potentially dangerous conditions.
Use the code described in Configuration Safety Lock to access this screen setting.
Hu: used with a humidifier to humidify home.
dE: used with air conditioner or dehumidifier to de humidify home.
—Press the or to select.
—Press to advance to the next screen.
CONFIG
HUMIDITY
Figure 20
Humidity Differential (1% to 10%)
—Set the percent difference between the setpoint humidity and when
the humidifier or dehumidifier system turns on.
—Press the or to select.
—Press to advance to the next screen.
CONFIG
HUMIDITY
%RH
Figure 21
Condition to Turn On
—Set the condition for system to follow:
Humidification
No = No condition other than humidity reading below setpoint and differential will
turn on the humidifier.
HEAT = Heat must be energized in order for the humidifier to turn on.
HEAT-FAN: Either the heat or the fan must be energized in order for the humidifier
to turn on.
Dehumidification
No = No condition other than humidity reading above setpoint and differential will
turn on the dehumidifier.
COOL-FAN = Either the cooling system or the fan must be energized in order for the
dehumidifier to turn on.
COOL-no = Cooling system cannot be energized in order for the dehumidifier to turn
on.
—Press the or to select.
—Press to advance to the next screen.
CONFIG
HUMIDITY
Figure 22

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Fan Delay Off Time (0, 30, 60, 90 seconds)
—Select the amount of time the fan continues to operate after the cool/
heat demand has been satisfied. Functions for cooling, heat pumps
and electric heat.
—Press or to select.
—Press to advance to the next screen.
CONFIG
Figure 23
Hourly Cycle Fan Operation (1-30 minutes per hour)
—Used in conjunction with the Fan HOURLY mode. When the user
selects this option, the fan will turn on at the beginning of every hour
and run for the number of minutes indicated here.
—Press or to select.
—Press to advance to the next screen.
CONFIG
HOURLY
Figure 24
Fan on Schedule (OFF, WAKE, LEAVE, RETURN, SLEEP)
—The fan will run continuously during this scheduled period when the
mode is not set to OFF. To turn on the fan during one of the scheduled
periods (WAKE, LEAVE, RETURN, SLEEP), please do the following:
—Press or to select.
—Press to advance to the next screen.
CONFIG
ON
SCHEDULEFAN
OFF
Figure 25
Check Filter Timer (800-2500 hours)
—After the number of (fan running) hours specified, (for example,
1200 hours), the words “CHECK FILTER” will display to remind you to
check/change the system filter. The next configuration screen is where
the elapsed number of run hours can be reset.
—Press or to select.
—Press to advance to the next screen.
CONFIG
Check
Filter
Figure 26
Reset Check Filter Timer
—Used to reset the elapsed number of (fan running) hours for the Check
Filter Timer
—Press or to select (YES).
—Press to advance to the next screen or press to exit
configuration setting mode.
Auto exit occurs after two minutes of no icons being touched.
CONFIG
RESET
Check
Filter
Figure 27

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6 Mode of operation
This thermostat is based on the i2020HR, but adds connections to the UPM to read
UPM fault codes. It saves fault code history and displays a new message on the front
panel of the thermostat to alert the user to call a service technician to service the
system.
The thermostat is a programmable, manual or auto changeover, up to 2-stage heat
and up to 2-stage cool thermostat. It functions with air conditioning, heat pumps,
gas, oil, or electric heat systems. The thermostat activates the heating appliance
when the room temperature is below the set heat temperature (by the differential
temperature). When the call for heat has been satisfied, the outputs are turned off.
With heat pumps, the thermostat will not let the compressor come on for 4 minutes
after it turns off to protect your compressor.
When the room temperature is greater than the set cool temperature (by the
differential temperature), the cooling device is activated. When the call for cooling
has been satisfied, the outputs are turned off. The thermostat will not let the
compressor come on for 4 minutes after it turns off to protect your compressor.
The program schedule can be overridden by changing the set temperature ( or
). This puts the thermostat into a temporary hold. It will automatically return to
the program schedule depending on how the override feature is configured.
The thermostat is controlling a dehumidifier (including an air conditioner). The
thermostat will turn on the dehumidifier when the relative humidity is above the
setpoint humidity, by the differential. Depending on the settings, when the relative
humidity reaches the differential humidity set or the room temperature is 3°F below
the set cooling temperature, the dehumidifier is turned off.
6.1 Icon functions
UP – Used to increase the time, set temperatures, and to adjust
configuration settings.
DOWN – Used to decrease the time, set temperatures, and to adjust
configuration settings.
MENU – Used to enter configuration, set the clock, lock the thermostat,
or select viewing options.
—CONFIG Sets up thermostat to work for specific
systems.
—CLOCK Set year, month, date, and time.
—LOCK Allows you to lock the thermostat to prevent
tampering.
—VIEW Allows you to see both the remote sensor
temperatures, date, current schedule period, lock
screen, filter accumulated time, and show details
(system status).
—HUMIDITY Allows you to view the current relative
humidity and change humidity setpoint (10%
to 80%).
FAN – Used to select between AUTO, ON, and HOURLY fan operation.
MODE – Used to select between OFF, HEAT, EMERGENCY HEAT (heat
pump only), COOL, and AUTO changeover modes.
HOME – Wakes thermostat, returns to home screen, and enters changes
into memory.
SCHEDULE – Used to edit program schedule, turn program on and off,
and set vacation return dates.
CALL
SERVICE
TECH
CALL SERVICE TECH – Message appears when the thermostat senses a
lockout condition occured on the UPM.
CHECK FILTER – Message appears when the blower motor set runtime
has been met. Indicates the air filter should be
checked, cleaned, or changed.

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6.2 Operating modes
The possible operating modes for the thermostat are: OFF, HEAT, EM HEAT, COOL,
and AUTO. Use to select.
OFF Mode
—In this mode, the thermostat will not turn on the heating or cooling
devices
The indoor fan can be turned on manually in every operating mode by
pressing until displays. The fan icon appears on the display
when the fan operates.
OFF
MODE
Figure 28
Heat Mode
—In this mode, the thermostat controls the heating system. When the
heat outputs, the flame icon appears on the display for each stage
of heat that is on.
For heat pumps, there is a four minute delay for your compressor to restart
after it has turned off. To bypass the compressor time delay, go to OFF
mode and press .
HEAT
HEAT
MODE
Figure 29
EM Heat Mode
—In this mode, the compressor is bypassed and emergency heat is
used.
This mode is only used with heat pumps.
HEAT
MODE
Figure 30
Cool Mode
—In this mode, the thermostat controls the cooling system. When the
cooling outputs, the snowflake icon appears on the display for
each stage of cool that is on.
There is a four minute delay for your compressor to restart after it has
turned off. To bypass the compressor time delay, go to OFF mode and
press .
COOL
COOL
MODE
Figure 31
Auto Mode
—In this mode, the thermostat controls both heating and cooling
systems simultaneously.
COOL
HEAT
AUTO
MODE
Figure 32

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6.3 Testing the thermostat
Once the thermostat is configured, it should be thoroughly tested.
CAUTION:
Do not energize the air conditioning system when the outdoor
temperature is below 50 degrees. It can result in equipment
damage or personal injury.
Heat Test
1. Press , then press until heat mode is displayed.
2. Adjust the set temperature so it is 5 degrees above the room temperature.
3. Heating should come on within a few seconds.
4. Adjust the set temperature 2 degrees below the room temperature and the
heat should turn off. There may be a fan delay on your system.
For heat pumps, there is a four-minute delay to protect your compressor
after it turns off. To bypass the compressor time delay, go to OFF mode
and press .
Cool Test
1. Press , then press until cool mode is displayed.
2. Adjust set temperature so it is 5 degrees below room temperature.
3. Cooling should come on within a few seconds.
4. Adjust the set temperature 2 degrees above the room temperature and the
cooling should turn off. There may be a fan delay on your system.
There is a four-minute time delay to protect the compressor after it turns
off. To bypass the compressor time delay, go to OFF mode and press ..
Fan Test
1. Press , then press icon. displays. Indoor fan turns ON.
2. Press , then press icon. displays. Indoor fan turns OFF.
6.4 Testing the thermostat humidity control
Humidification Test – when set to humidification, only
To test the humidifier, set the mode and fan to the correct setting:
—HEAT-FAN: Either the heating system or fan must be operating in
order for the humidifier to turn on.
—HEAT: Heat must be operating in order for the humidifier to turn on.
—no: No condition other than humidity reading below setpoint and
differential will turn on humidifier.
1. Go to MENU/HUMIDITY and press .
2. Change the humidity setpoint above the relative humidity by the differential
(see Configuration Menu section).
3. Press twice. You should hear a click and when you go back into the
humidity settings you will see ON in the top left corner of the screen.
4. Change the humidity setting below the relative humidity by the differential.
The humidifier will turn off.
Dehumidification Test – when set to dehumidification, only
To test dehumidification, set the mode and fan to the correct settings.
—COOL-FAN:Either the cooling system or fan must be operating in
order for the dehumidifier to turn on.
—COOL-no: The cooling system must be turned off in order for the
dehumidifier to turn on.
—no: No condition other than humidity reading above setpoint and
differential will turn on dehumidifier.
1. Go to MENU/HUMIDITY and press .
2. Change the humidity setpoint below the relative humidity by the differential
(Configuration Menu, Section 19, Page 16).
3. Press twice. If the relay configuration is set to normally open, there will
be a click and the humidity screen will display ON. If the relay configuration is
set to normally closed, the humidity screen will not display ON.
4. Change the humidity setting to greater than the relative humidity by the
differential by pressing the .
5. Press twice. If the relay configuration is set to normally closed, there
will be a click and ON is displayed on the humidity screen. If the relay
configuration is set to normally open, the humidity screen will not display ON.

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6.5 Setting the time and date
1. Press , then press until CLOCK is displayed.
2. Press to enter date/time setting. Year blinks.
3. Press or to select the year.
4. Press to save value and move to month.
5. Press or to select the month.
6. Press to save value and move to day.
7. Press or to select the day.
8. Press to save value and move to hour.
9. Press or to select the hour.
As you move past 12:00, the AM/PM symbol will change automatically.
10. Press to save the value and move to minutes.
11. Press or to select the minutes.
12. Press to exit Time/Date setting.
6.6 Setting the program schedule
The thermostat has four periods (WAKE, LEAVE, RETURN, SLEEP) that are
customizable for each day of the week. Each period will have a start time, heat
temperature, and cool temperature. The thermostat monitors the day and time, while
maintaining the specific conditions you have chosen for each period in your program.
Setting the program schedule:
1. Press , then press until EDIT is displayed.
2. Press to enter Program Schedule.
3. The day of the week flashes. Use the or to select the day of the week.
You can select the days individually, or if you keep going, there is an option
for MON-FRI, MON-SUN or SAT-SUN.
4. Press to continue.
5. The period (WAKE, LEAVE, RETURN, SLEEP) begins flashing. Use the or
to select the desired period.
6. Press to continue.
7. Hour flashes. Use the or to select the hour when you want the current
period to begin.
8. Press to continue.
9. The minutes flash. Use the or to select the minutes when you want the
current period to begin.
10. Press to continue.
11. The HEAT temperature flashes. Use the or to set the desired heat
temperature.
12. Press to continue.
13. The COOL temperature flashes. Use the or to set the desired cool
temperature.
14. Press to continue.
15. Continue to set your entire schedule.
16. Press to exit.

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6.7 View screen options
1. Press , then press repeatedly until the option displays
then press .
2. Press to advance to the next screen.
3. Press to go to previous screen.
These screens are visible when the thermostat is locked or unlocked.
View fault Screen
VIEW
Day
Month
Figure 33
View month, day, and year
VIEW
Day
Month
Year
Figure 34
View program schedule settings
—OFF shows when schedule is off.
—SETTINGS show when schedule is on.
VIEW
SCHEDULE
SLEEP
Mon
Figure 35
View if locked or unlocked
—= Unlocked
—= Locked
VIEW
Figure 36
View filter status
—Accumulated fan run time displays.
VIEW
Figure 37
Display setpoints, fan, and program information
—Press or to select.
= Don’t display setpoints and program schedule information.
= Always display setpoints and program schedule information.
—Press to exit.
VIEW
SLEEP
Figure 38

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Bosch Thermotechnology Corp. |09.2016 Data subject to change
6.8 Viewing fault codes
When one of the faults listed below causes a hard lockout on the UPM the unit
compressors are disabled and the “Call Service Tech” light is illuminated.
To view UPM’s fault code, go to . Press multiple times to the last menu
item.
If no fault history is recorded, screen will show “VIEW Er no”.
VIEW
Figure 39
If fault history is recorded, screen will show “VIEW E{x} {month} {date} {time}”
indicating the fault code, date and time of the fault.
VIEW
Day
Month
Figure 40
You can press or button to browse fault history. The thermostat records the
latest 20 faults.
For additional information on fault codes, please refer to the unit
instruction and maintenance manual.

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6.9 Schedule override
The schedule override feature allows the user to override the program schedule for 1
to 5 hours. In addition, if selected, the schedule can be overridden only until the next
transition period.
To access the Schedule override feature, enter the CONFIG screen by pressing
the menu button. Then, use to scroll through the menu options until you reach
the SCHEDULE OVERRIDE screen. In the default setting, the Vacation & Schedule
periods will be flashing in the upper right corner of the LCD. In this mode, the
Vacation & Schedule will be overridden until the next transition period. To switch to
the 1-5 hour override, use the arrow. This mode allows the user to override the
Schedule set points for 1-5 hours.
Figure 41
6.10 Setting the vacation timer
The vacation timer lets you set the date and time of your RETURN from vacation. Until
that date/time, the system will remain at the VACATION heating and cooling setpoints
specified in the configuration menu.
To use the EASY VACATION feature:
Press , then press the to scroll to “Vacation” then press again. The
thermostat will automatically go into Vacation mode with the default return date 1
month later .
To set the vacation timer (and begin vacation setpoint mode):
1. Press to select operating mode.
2. Press , then press until VACATION appears.
3. Press to enter the date and time you plan to RETURN from vacation.
4. When your finished entering the date/time, press .