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Lightstat TME series, Руководство по установке и эксплуатации, Страница: 26 / 28

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26

Questions... Call Tech Support at 800-292-2444

Symptom

Possible Cause

Solution

No Operation of 

Heating or Cooling 

Lightstat 

TME 

Power Off.

Press the System ON/OFF 

button.

No Power to equipment or 

Lightstat 

TME.

Check switches, circuit 

breakers, fuses, gas valve and 

pilot.

Lightstat 

TME

 in Night 

Setback.

See Light Adjustment on Page 

19.

Lightstat 

TME 

at limit 

temperature.

Check Display to verify the 

Lightstat 

TME

 is set at its 

Cooling Minimum or Heating 

Maximum.

Display does not 

come on during 

Power-up

No power to the Lightstat 

TME.

Verify 24 VAC is present at 

terminal block by measuring 

from R to C. If no voltage 

present check breakers and 

fuses.

Fan Blows Cold air in 

Heating Season

Fan ON/AUTO is in the 

wrong position.

Move Fan to Auto position by 

pressing the FAN ON/AUTO 

button.

Heat Fan Switch in wrong 

position.

See setting the Heat Fan 

switch on Page 15.

O/B switch set to wrong 

position for Heat Pump.

See setting the O/B Switch on 

Page 14.

Heating or Cooling 

will not come ON

O/B switch set to wrong 

position for Heat Pump.

See setting the O/B switch on 

Page 14.

Time Delay holding Heating 

or Cool Off.

Press the Check button to 

cancel the time delays.

Green Setback Light 

Stays ON or OFF

Improper Light Sensor 

adjustment.

See Light Adjustment on Page 

19.

Basic Troubleshooting

Содержание TME series

Страница 1: ...of model number is determined by customer specified limits and Setbacks AUTOMATIC SETBACK THERMOSTAT LIGHT SENSING OR CONTACT CLOSURE FOR LOW VOLTAGE 24VAC SYSTEMS ONLY REQUIRES A COMMON WIRE Manufac...

Страница 2: ...heat or a limit switch controlled fan typical of gas heat Auxiliary output options to permit the O B output to be active with a call for Heat or Cool for heat pump reversing valve A1 A2 isolated dry...

Страница 3: ...nterface with these types of systems The Lightstat TME is designed for 24 VAC systems only Pick a mounting location AWAY from drafts windows doors outside walls and heat vents Relocate if necessary Th...

Страница 4: ...Fan ON AUTO button I Fan ON AUTO Indicator J Light Sensitivity Adjustment K Illuminated ON and arrow indicate which outputs are currently ON Flashing arrow indicates time delay L Flashing DELAY indica...

Страница 5: ...t TME must be installed on a single transformer system C Common or Neutral side of transformer This must be connected O B This output may be active with either a call for Heat B or a call for Cool O b...

Страница 6: ...a Lightstat TME You can add a Remote Room Sensor to sense temperature remotely Two Averaging Remote Room Sensors may be used to provide an average Room Temperature Order as Averaging Sensors And you...

Страница 7: ...sors are unaffected by wire runs of up to 500 feet Remote Room Sensor cables do not have polarity either wire may be connected to either terminal Cables do not need to be shielded At the Lightstat TME...

Страница 8: ...ble between the Lightstat TME and the Supply Air Sensor Supply Air Sensor is unaffected by wire runs of up to 500 feet Supply Air Sensor cables do not have polarity either wire may be connected to eit...

Страница 9: ...t have to be shielded At the Lightstat TME end connect the cable to the two terminals marked A1 and A2 At the other end connect it to the damper or equipment The A1 and A2 terminals are an isolated se...

Страница 10: ...C1 C2 cable does not have polarity either wire may be connected to either terminal Cables do not have to be shielded At the Lightstat TME end connect the cable to the two terminals marked C1 and C2 At...

Страница 11: ...t RTU This is a field option You might not have this option with your specific RTU Use 18 gauge 2 conductor cable between the Lightstat TME and the RTU The alarm is unaffected by wire runs of up to 10...

Страница 12: ...void expensive electric resistance heat Note When connecting a Lightstat TME to a heat pump with Thermostat Reversing Valve Control you will need to install a jumper wire between W1 and Y1 at the Ligh...

Страница 13: ...n and Off time for any stage of Heating or Cooling will be 3 minutes When set to ON there will be no minimum On and Off time for any stage of Heating or Cooling In either position the Fan will continu...

Страница 14: ...e position of the O B switch will determine whether the O B output comes on with a call for Heating or for Cooling In the OFF position it will remain latched On during the Cooling Cycles O until there...

Страница 15: ...as Electric switch Consult the HVAC equipment manufacturer instructions for details on how to set this switch When controlling fossil fueled equipment with a fan limit control you may want to set this...

Страница 16: ...l tell the Lightstat TME to ignore the on board temperature sensor You will see the word REMOTE appear in the display indicating the Remote Room Sensor switch has been moved to ON A 00 in the display...

Страница 17: ...re occupancy and how far away from the heating and cooling setpoints the temperature is It calculates how long it will take to heat up or cool down and operates the equipment accordingly Remember to c...

Страница 18: ...ion on your Lightstat TME Sequence Display Symbol Meaning First All Characters On Verifies all display characters Second Cool Set Factory Min Cool Setting Heat Set Factory Max Heat Setting Temperature...

Страница 19: ...the top of your Lightstat TME is where it senses the light If you shadow the window at the top of the Lightstat TME it will cause it to shift to the Setback mode It will signal this by turning on the...

Страница 20: ...button to shift the temperature display from ROOM temperature to SUPPLY temperature The SUPPLY temperature is the air temperature coming from your HVAC system You will have to install a Supply Air Se...

Страница 21: ...hift to AUTO FAN during Setback The CHECK button is used to cancel any safety time delays These time delays are to protect the equipment from short cycling and to prevent multiple HVAC systems from co...

Страница 22: ...ating setpoint up to a maximum HEAT LIMIT When you reach the HEAT LIMIT the heating setpoint will stop and the display will flash HEAT SET AT MAXIMUM The cooling setpoint can continue to be adjusted h...

Страница 23: ...e output is being held off for a minimum time period Whenever a delay is in effect the word DELAY will also flash above the indicators Note Use the CHECK button to cancel time delays for quicker check...

Страница 24: ...ng on during the summer when the room temperature is well above the Heating Maximum You do this by pushing and holding the Up Button and the CHECK button at the same time Outputs will only remain on w...

Страница 25: ...money and RTU down time If the RTU has an alarm signal connection when something is not working prop erly it will send an alarm signal to the thermostat When this occurs a red flashing light will be...

Страница 26: ...4 VAC is present at terminal block by measuring from R to C If no voltage present check breakers and fuses Fan Blows Cold air in Heating Season Fan ON AUTO is in the wrong position Move Fan toAuto pos...

Страница 27: ...s blank Transformer is too small for the installation The Lightstat TME needs a minimum of 21VAC to operate You may have to install a larger transformer to provide adequate power to keep the voltage a...

Страница 28: ...t that it deter mines to be defective Replaced Products may be refurbished or new equipment at the option of Light stat Such Product must be removed by the installer and returned to the factory within...

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