A Quick Test; Wiring Diagrams; Troubleshooting - ICM Controls SC2001 Installation, Operation & Application Manual

A Quick Test

CAUTION!: Do not switch system to cool if the outdoor temperature is below 50°F (10°C). This
can damage the air conditioning system and may cause personal injury.
Action: Set the Mode switch to Cool. Press the
the room temperature.
Result: The A/C system and fan should turn on.
Action: Set the Mode switch to Off.
Result: The A/C should turn off (there may be a fan delay).
Action: Set the Mode switch to Heat. Press the
the room temperature.
Result: The heating systems and fan should turn on (there may be a time delay depending
on your system).
Action: Set the Mode switch to Off.
Result: The heating system should turn off (there may be a fan delay).
Action: Set the Fan switch to On (continuous indoor fan operation).
Result: The blower fan should turn on.
Action: Set the Fan switch to Auto.
Result: The blower fan should turn off.
If the above test was successful, you have a proper installation.
If not: Double check that wires are securely connected and are connected to the proper terminals.
Consult the troubleshooting section.

Wiring Diagrams

Heating and Cooling
4 or 5-Wire, Single Transformer
Transformer
HOT
120 VAC
4-Wire, Single Transformer
Transformer
HOT
R
120 VAC 24 VAC
C
Heating
W
Control
Y
B
O
Fan
G
Control
Heat Pump
Cool Active
Reversing Valve
R
Transformer Transformer
T
HOT HOT
C
H
120 VAC 24 VAC 120 VAC
E
W
R
M
Compressor
Y
O
Contactor
S
B
T
A
Reversing
O
T
Valve
Fan
G
Relay
Place jumper between "W" and "Y" terminals.

Troubleshooting

Symptom
The system is not turning on Check the wiring (see To Install Thermostat)
LCD is blank Check the wiring (see To Install Thermostat)
Thermostat is not properly Check that the Gas/Electric switch setting matches your system (gas or
controlling the fan electric)
Thermostat is continuously turning Increase the temperature differential
on and off (see Setting a New Temperature Differential)
Temperature display is not accurate Your thermostat has two options for temperature readout: Fahrenheit
(default) or Celsius; check that the "jumper" is properly set to your
preference
Plug the hole for wiring behind the thermostat with non-flammable
insulation to prevent airflow into the thermostat
button until the temperature setting is 3°F below
button until the temperature setting is 3°F above
R
T
24 VAC
(Optional)
C
H
E
Heating
W
R
Control
M
Cooling
Y
O
Control
S
B
T
A
O
T
Fan
G
Control
Heating Only
3-Wire, Single Transformer
Transformer
HOT
T 120 VAC 24 VAC
H
E
Heating
R
Control
M
O
S
T
A
T
Cooling Only
Heat Active
Reversing Valve Single Transformer
R
Transformer
T
HOT
C
H
24 VAC 120 VAC
E
W
R
M
Compressor
Y
O
Contactor
S
Reversing
B
T
Valve
A
O
T
Fan
G
Relay
Millivolt systems may require a
transformer and/or an isolation
relay to operate properly.
Remedy
R
T
C
H
E
W
R
M
Y
O
S
B
T
A
O
T
G
4-Wire
R
T
C
H
24 VAC
E
W
R
M
Cooling
Y
O
Control
S
B
T
A
O
T
Fan
G
Control
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.
ONE-YEAR LIMITED WARRANTY
7313 William Barry Blvd., North Syracuse, NY 13212
(Toll Free) 800-365-5525
(Phone) 315-233-5266
www.icmcontrols.com
(Fax) 315-233-5276
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