ONE-YEAR LIMITED WARRANTY
The Seller warrants its products against defects in material or workmanship for a period of one (1) year from the
date of manufacture. The liability of the Seller is limited, at its option, to repair, replace or issue a non-case credit for
the purchase prices of the goods which are provided to be defective. The warranty and remedies set forth herein
do not apply to any goods or parts thereof which have been subjected to misuse including any use or application
in violation of the Seller’s instructions, neglect, tampering, improper storage, incorrect installation or servicing not
performed by the Seller. In order to permit the Seller to properly administer the warranty, the Buyer shall: 1) Notify
the Seller promptly of any claim, submitting date code information or any other pertinent data as requested by the
Seller. 2) Permit the Seller to inspect and test the product claimed to be defective. Items claimed to be defective
and are determined by Seller to be non-defective are subject to a $30.00 per hour inspection fee. This warranty
constitutes the Seller’s sole liability hereunder and is in lieu of any other warranty expressed, implied or statutory.
Unless otherwise stated in writing, Seller makes no warranty that the goods depicted or described herein are fit for
any particular purpose.
LIAF006
Patent No. 424,953
7313 William Barry Blvd., North Syracuse, NY 13212
(
Toll Free
) 800-365-5525 (
Phone
) 315-233-5266 (
Fax
) 315-233-5276
www.icmcontrols.com
2.
Temperature Differential – Stage 1 – (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 for first stage.
Press the or button to set differential value.
Press the
SW6
button to advance to the next screen.
DIFF
Configuration Mode Settings
The setup screens for Configuration Mode are as follows:
1.
Temperature Scale (F or C) –
Choose Fahrenheit or Celsius.
Press the or button to select.
Press the
SW6
button to advance to the next screen.
9.
Maximum compressor cycles allowed per hour
(-, 2-6)
- = as many as needed, 2-6 = maximum cycles/hour
Press the or button to select.
Press the
SW5
button to review settings.
Slide the
Mode
switch to
Heat
or
Cool
to exit configuration.
ROOM
SET
8.
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.
Note:
When not set to 0,
ROOM
will display
Press the or button to select.
Press the
SW6
button to advance to the next screen.
SET
7.
Minimum Cool Setpoint
(45°F to 90°F) (7.0°C to 32.0°C)
Adjust to control the minimum Cool set temperature allowed.
Press the or button to select.
Press the
SW6
button to advance to the next screen.
SET
6.
Maximum Heat Setpoint
(45°F to 90°F) (7.0°C to 32.0°C)
Adjust to control the maximum Heat set temperature allowed.
Press the or button to select.
Press the
SW6
button to advance to the next screen.
5.
Staged Off Outputs
Select whether the outputs for heating and cooling are staged off
independently or are satisfied simultaneously.
1 = Economy Mode – Outputs are staged on and off in accordance with set
point and differential.
0 = Comfort Mode – Outputs are staged on and and all stages cycle off
simultaneously when set point is satisfied.
DIFF
4.
Temperature Differential – Stage 3 – (1°F to 5°F) (0.5°C to 2.5°C) –
Set the number of degrees between when stage 2 turns on and stage 3 turns on.
Press the or button to set differential value.
Press the
SW6
button to advance to the next screen.
DIFF
3.
Temperature Differential – Stage 2 – (1°F to 5°F) (0.5°C to 2.5°C)
Set the number of degrees between when stage 1 turns on and stage 2 turns on.
Press the or button to set differential value.
Press the
SW6
button to advance to the next screen.
Configuration Mode
The configuration mode is used to set the SC2211 to match your heating/cooling system. The SC2211
functions with up to 3-stage heat pump systems.
To configure the SC2211, perform the following steps:
1. Slide the
Mode
switch to the
OFF
position.
2. Remove the cover of the thermostat by gently pulling on one of the corners.
3. Simultaneously hold the
SW5
&
SW6
buttons in for 2 seconds while the SC2211 is in
OFF
mode.
4. Press the or button to change settings within each screen.
5. Press the
SW6
button to advance to the next screen.
Note:
The
SW5
button will return you to the previous screen.
6. To exit configuration mode, slide the
Mode
switch to
Heat
or
Cool
.
Once the thermostat is installed, 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.
Testing the Thermostat
ROOM
CAUTION!
:
Do not use air conditioning when the outdoor temperature is below 50
degrees. This can damage your air conditioning system and cause personal
injuries.
1. Move the
Fan Auto/On
switch to the
Auto
position.
2. Move the
Cool/Off/Heat/Emer
switch to
Cool
or
Heat
, depending on the season.
Starting the Thermostat
LED Indicators
There are three LED indicators located on the front of the thermostat. They are designed to inform
you about the following:
LED
Color
Function
AUX
Green
• This turns on when the auxiliary (second stage) heating is in operation
• It turns on 1-6°F below first stage and is user adjustable
(see Configuration Mode, Step 3)
CHECK
Red
• When this turns on, a malfunction has occurred somewhere in the heat
pump system
• Please contact a qualified service technician as soon as possible to
check your system
EMER
Red
• This light turns on whenever the emergency heat is manually selected
(
Mode
switch is in the
EMER
position)
• While in the emergency
Heat
mode, the heat pump compressor is off,
and the emergency heat (same as the auxiliary heat) maintains the
setpoint temperature
Troubleshooting
Cool Test
1. Slide
Mode
switch to
Cool
mode.
2. Adjust set temperature so it is 5 degrees below room temperature.
3. Air conditioning should come on within a few seconds.
4. Adjust the set temperature 2 degrees above the room temperature
and the A/C should turn off. There may be a fan delay on your
system.
Note:
There is a four minute time delay to protect the compressor
after it turns off. To temporarily bypass the four minute
delay, slide the
Mode
switch to
OFF
for 2 seconds and then
back to
Cool
.
Heat Test
1. Slide
Mode
switch to
Heat
mode.
2. Adjust the set temperature so it is 5 degrees above the room
temperature.
3. Heat should come on within a few seconds.
4. Adjust the set temperature so it is 2 degrees below the room
temperature and the heat should turn off. There may be a fan delay
on your system.
Note:
There is a four minute time delay to protect the compressor after it turns off. To
temporarily bypass the four minute delay, slide the
Mode
switch to
OFF
for 2 seconds and
then back to
Heat
.
Emergency Heat Test
1. Slide
Mode
switch to
Emer
position (Emer LED lights).
2. Adjust the set temperature so it is 5 degrees above the room temperature.
There may be a four minute delay.
3. Second stage heat should come on (Aux LED lights).
4. Adjust the set temperature so it is 2 degrees below the room temperature.
Heat should turn off. There may be a fan delay on your system.
Fan Test
1. Slide
Fan
switch to
On
position.
2. Indoor fan turns on.
3. Slide
Fan
switch to
Auto
position.
4. Indoor fan turns off.
Auto
On
Auto
On
Cool Off Heat Emer
Cool Off Heat Emer
Cool Off Heat Emer
Mode of Operation
The SC2211 is a multi-stage, heat pump thermostat for 24 VAC systems.
The thermostat activates the heat pump when the room temperature is below the heat set
temperature (by the differential temperature). Auxiliary heat will be activated if the room temperature
continues to drop. Third stage heat is activated (on some systems) if the temperature drops further.
The heat outputs are staged off (configurable, setting 5) as the room temperature increases. The
thermostat will not let the compressor come on for four minutes after it turns off. This protects your
compressor.
When the room temperature is greater than the cool set temperature (by the differential temperature),
the cooling device is activated. Second-stage cooling will be activated if the room temperature
continues to rise. The cool outputs are staged off (configurable, setting 5) as the room temperature
decreases. The thermostat will not let the compressor come on for four minutes after it turns off. This
protects your compressor.
The SC2211 has the following operating modes:
OFF
,
Heat, Emergency Heat
and
Cool
. In
OFF
mode, the thermostat will not turn on heating or cooling devices. In the
Heat
mode, the thermostat
controls the heat pump system. In the
Emergency Heat
mode, the heat pump is bypassed and
auxiliary becomes the primary heat source. In the
Cool
mode, the thermostat controls the cooling
system. The indoor fan can be turned on in all operating modes using the
Fan
switch.
Symptom
Remedy
No display
Check for 24 VAC at thermostat; display is blank when 24 VAC is not
present
System fan does not come on
properly
Verify wiring is correct
Thermostat turns on and off too
frequently
Adjust temperature differential (see “Temperature Differential,” Stage 1,
Step 2)
Fan runs continuously
Check fan On/Auto switch, ON position runs indoor fan continuously
Room temperature is not correct
Verify wall hole is plugged with putty or insulation; calibrate thermostat
(see “Configuration,” Step 8)
ROOM displays
Room temperature offset is not zero (see “Configuration,” Step 8)
Auxiliary heat not on soon enough
Adjust differential for 2nd and 3rd stage heating if required (see
Configuration, Steps 3 and 4)
Problem not listed above
Press the Reset button once; display will be refreshed and anti-short
cycle timing will be reset to zero
