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Symptom

Remedy

The system isn’t turning on

Check the wiring (see Installation, Page 4)
Check the batteries (SC2000 only)

LCD is blank, or displaying “LO BAT”

SC2000: Replace batteries, or make sure the existing ones are properly

installed (see Installing and Changing Batteries, Page 6)

SC2001: Verify 24 VAC is at thermostat.

Thermostat is not properly controlling the fan

Check that the

Gas/Electric

jumper setting matches your system (gas

or electric)

Thermostat is continuously turning on and off

Increase the temperature differential (see Setting a New Temperature
Differential, Page 15)

Temperature displayed is not accurate

Verify no heat producing objects are located near the thermostat.

Verify thermostat has adequate air flow to it.

Troubleshooting

Содержание SC 2000

Страница 1: ...ms troubleshooting tips and more visit us at www icmcontrols com SC2000 SC2001 Non Programmable Electronic Thermostats Controls Single Stage Heating Cooling Systems Single Stage Heat Pump Systems Compatible with Gas Oil or Electric Systems Millivolt and Hydronic water or steam System Compatible Mercury Free Environmentally Safe ...

Страница 2: ... Install Thermostat 4 Installing and Changing Batteries 6 Replacing Wiring Labels 6 SC2000 Wiring Diagrams 7 10 SC2001 Wiring Diagrams 11 13 A Quick Test 14 Operation 15 Troubleshooting 16 CAUTION This thermostat should be installed by trained technicians only Adhere to all local and national codes Disconnect all power to the system before installing removing or cleaning ...

Страница 3: ...P GAS ELEC SC2001 G O B Y RH RC W RH RC NON HP HP SC2000 GAS ELEC Reset Switch Electric Gas Jumper Mode Switch Fan Switch Freeze Switch High Temp Switch Non HP HP Jumper Electric Gas Jumper Mode Switch Fan Switch Freeze Switch High Temp Switch Non HP HP Jumper RH RC Switch ...

Страница 4: ...tery signal Temperature differential setting Room temperature Room temperature setpoint Always turn off the thermostat before installing removing cleaning or servicing turn off the power at the main power source by unscrewing fuse or switching off circuit breaker Do not switch to Cool if room temperature is below 50 F this could damage your A C system and cause injury Do not install on voltages hi...

Страница 5: ...ystems heating cooling systems and heat pump systems works with gas oil or electric systems Compatible as a master thermostat in zoned system applications Freeze Protection Feature Protects pipes from freezing If the room temperature drops to 40 F the thermostat automatically turns on the heat the thermostat must be in the Heat position works even if the batteries are dead Built in Compressor Prot...

Страница 6: ...tat base from wall 6 Refer to the following section for instructions on how to install this thermostat ELECTRICAL SHOCK HAZARD Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat IMPORTANT Thermostat installation must conform to local and national building and electrical codes and ord...

Страница 7: ...tap supplied anchors into mounting holes 9 Align thermostat base with mounting holes and feed the control wires through wire opening 10 Use supplied screws to mount thermostat base to wall CAUTION Be sure exposed portion of wires does not touch other wires 11 Tighten screws on terminal block Gently tug wire to be sure of proper connection Double check that each wire is connected to the proper term...

Страница 8: ...o the battery compartment Proper battery installation is important Make sure the positive ends of the batteries match the positive terminals in the battery compartment If the display is on the batteries are installed properly Installing and Changing Batteries SC2000 only Replace the old labels with the enclosed new labels Replacing Wiring Labels Old New Type F G G Fan control relay O O Cool active...

Страница 9: ...em RH RC W Y B O G RH RC W Y B O G RH RC W Y B O G RH RC W Y B O G RH RC W Y B O G RH RC W Y B O G Zone 1 Zone 3 Zone 2 Zone 1 Zone 3 Zone 2 24 VAC 24 VAC Use appropriate size single pole double throw relay Note Differential temperature may need to be increased for zone damper system SC2000 Wiring Diagrams ...

Страница 10: ...ontrol Fan Control T H E R M O S T A T RH RC W Y B O G HOT RH RC W Y B O G 120 VAC 24 VAC Remove Pre Installed Jumper Heating Control Cooling Control Fan Control Heating Transformer Cooling Transformer HOT 120 VAC 24 VAC T H E R M O S T A T Note Both transformers must be in phase 5 Wire Two Transformer SC2000 RH RC RH RC ...

Страница 11: ...VAC Transformer Heating Control Fan Control T H E R M O S T A T RH RC W Y B O G Heating Control T H E R M O S T A T RH RC W Y B O G Thermopile or Transformer 2 Wire Single Transformer or Millivolt SC2000 RH RC Pre Installed Jumper RH RC Pre Installed Jumper ...

Страница 12: ...Valve Compressor Contactor Fan Relay Reversing Valve Cooling Control Fan Control Cool Active Reversing Valve Heat Active Reversing Valve 3 Wire Single Transformer Note Place jumper between W and Y terminals Place heat pump jumper to HP position Note Millivolt system may require a transformer and or an isolation relay to operate properly Cool Only Heat Pump SC2000 Pre Installed Jumper RH RC Pre Ins...

Страница 13: ...11 4 or 5 Wire Single Transformer 24 VAC T H E R M O S T A T R C Y G 120 VAC HOT Transformer Fan Control W B O Heating Control Optional Cooling Control SC2001 Wiring Diagrams Heating and Cooling ...

Страница 14: ...ormer 24 VAC T H E R M O S T A T R C Y G 120 VAC HOT Transformer Fan Control W B O Heating Control 3 Wire Single Transformer 24 VAC T H E R M O S T A T R C Y G 120 VAC HOT Transformer W B O Heating Control Heating Only SC2001 ...

Страница 15: ...elay Fan Relay Fan Control Cooling Control Compressor Contactor Reversing Valve Compressor Contactor Reversing Valve Heat Active Reversing Valve Cool Active Reversing Valve 4 Wire Single Transformer Heat Pump Cooling Only SC2001 Note Place jumper between W and Y terminals Place heat pump jumper to HP position Note Millivolt system may require a transformer and or an isolation relay to operate prop...

Страница 16: ...lay Action Set the Cool Off Heat switch to Heat Press the button until the temperature setting is 3 F above the room temperature Result The heating system and fan should turn on There may be a time delay depending on your system Action Set the Cool Off Heat switch to Off Result The heating system should turn off There may be a fan delay Action Set the Fan Auto On switch On Result The blower fan sh...

Страница 17: ...y 1 F the thermostat turns your system on If you notice your system turning on and off too frequently increase the temperature differential Step 1 Remove cover Insert a coin or screwdriver in slot at the top if needed Step 2 For SC2000 Removing batteries for 10 seconds and then reinsert them For SC2001 Press the Reset button once see diagrams on Page 1 Step 3 When Diff01 displays press the or arro...

Страница 18: ... Page 6 SC2001 Verify 24 VAC is at thermostat Thermostat is not properly controlling the fan Check that the Gas Electric jumper setting matches your system gas or electric Thermostat is continuously turning on and off Increase the temperature differential see Setting a New Temperature Differential Page 15 Temperature displayed is not accurate Verify no heat producing objects are located near the t...

Страница 19: ......

Страница 20: ...der 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 inspec...

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ICM Controls SC 2000, Инструкция по установке, эксплуатации и применению

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