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TEC22x2-3 L

ON

W

ORKS

® Networked Heat Pump Thermostat Installation Instructions 

17

Thermostat does 
not call for cooling

Wrong mode 
selected

Select cooling mode.

Thermostat in 
Unoccupied mode

Select Override to force the thermostat Occupied cooling setpoint.

Anticycle delay 
active

Wait, the anticycling period must end before the equipment can start.

Cooling setpoint is 
satisfied

Lower the cooling setpoint.

Cooling lockout 
attained

Mode is locked out based on outside air temperature.
Change configuration parameter 

C Lock

 to value -40 °F (-40 °C) to by-pass 

lockout.

Wiring error

Start the fan by forcing the Fan ON mode.
Put a jumper across terminals RC & Y1. The cooling should come ON. If it 
does not, verify wiring.

The thermostat 
does not turn on 
the fan 

Wiring error

Start the fan by forcing the Fan ON mode.
Put a jumper across terminals RC & G. The fan should come ON If it does not, 
verify wiring.

Digital display 
shows missing 
digits or erratic 
segments

Defective display

Replace the thermostat.

Auxiliary heat does 
not operate

Wrong mode 
selected

Select Emergency Heat mode.

Thermostat in 
Unoccupied mode

Select Override to force the thermostat Occupied heating setpoint.

Heating setpoint is 
satisfied

Raise the Heating setpoint.

Anticycle delay 
active

Wait, the anticycling period must end before the equipment can start.

High balance point 
attained

Mode is locked out based on outside air temperature.
Change configuration parameter 

High BP 

to value 90°F (32°C) to by-pass 

lockout.

Heating lockout 
attained 

Mode is locked out based on outside air temperature.
Change configuration parameter H Lock to value 120°F (49°C) to by-pass 
lockout.

Wiring error 

Start the Fan by forcing the Fan ON mode.
Put a jumper across terminals RH & W1. The heating should come ON. If it 
does not, verify wiring and check if a jumper is required between RC & RH.

Wrong reversing 
valve configuration

Wrong selection of parameter 

Re Valve

.

Select O to energize the valve in cooling 

o

peration. Valve is normally heat.

Select B to energize the valve in heating operation. Valve is normally cool.

Table 8:  Troubleshooting Details (Part 2 of 3)

Symptom

Cause

Solution(s)

Содержание TEC22 2-3 LonWorks Series

Страница 1: ...appareil num rique de la Classe A respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada Installation Location Considerations Locate the TEC22x2 3 thermostat on a partitioning...

Страница 2: ...into the locking tabs on the thermostat mounting base 9 Pull the pull tabs on each of the connectors and remove the screw terminal blocks as illustrated in Figure 4 Wiring When an existing thermostat...

Страница 3: ...Table 1 Terminal Identification See Figure 5 Number Label Function 1 Y2 Energizes second stage compressor on a call for heating or cooling 2 Y1 Energizes first stage compressor on a call for heating o...

Страница 4: ...k wiring in the same conduit as line voltage wiring 30 VAC or above or other wiring that switches power to highly inductive loads such as contactors coils motors or generators The LONWORKS network req...

Страница 5: ...el when the thermostat is left unattended for 45 seconds Light Emitting Diodes LEDs Three LEDs are included to indicate the fan status call for heat or call for cooling The FAN LED is on when the fan...

Страница 6: ...the UP DOWN arrow keys simultaneously for 5 seconds to broadcast the thermostat s Neuron Identification on the LONWORKS network If the cover is removed you can see a green LED under the LON board fla...

Страница 7: ...ccess No Access System Mode Setting Access No Access No Access Fan Mode Setting Access No Access No Access Schedules Setting5 Access No Access No Access Clock Setting5 Access Access Access Pwr del2 Se...

Страница 8: ...ycle has ended The fan delay is only active when the fan is in the Auto mode TOccTime Sets the duration of the Temporary Occupancy Time when the thermostat is in the Unoccupied mode when a Schedule Ov...

Страница 9: ...desired occupied temperature either at the start of the occupied schedule or after the occupied schedule begins Note Progressive recovery is disabled if either DI1 or DI2 is configured as remote NSB D...

Страница 10: ...auxiliary heat is energized and the heat pump is shut off This typically applies when the air handler heat pump coil is installed after the auxiliary heat There is a 2 minute delay to restart the heat...

Страница 11: ...at is in the unoccupied override mode To resume the schedule while in the Main User Menu 1 Press the NO key to all prompts until the Cancel ovrd Y N prompt appears If the thermostat is in the unoccupi...

Страница 12: ...ess the UP DOWN arrow keys to locate the desired system mode Press the YES key to select the desired system mode 3 Press the YES key to return to the Status Display Menu or press the NO key to return...

Страница 13: ...e to change the time in 1 minute increments press and hold down the keys to change the time in 30 minute increments Note Programming one of the digital inputs to remote NSB disables the menu Table 4 P...

Страница 14: ...ess the UP DOWN arrow keys to set the first unoccupied start time Press the YES key to enter the time RoomTemp 75 0 F Schedule set Y N Monday set Y N Occupied day Y N Occupied 12 00 AM Unoccup 12 00 A...

Страница 15: ...ess the YES key to store the day 6 Press the YES key to choose the time format or press the NO key to access the Main User Menu exit prompt 7 Press the UP DOWN arrow keys to select the desired time fo...

Страница 16: ...voltage between RC and C to be from 19 30 VAC 2 Check for tripped fuse or circuit breaker Overloaded power transformer Verify that the transformer used is powerful enough enough VAs to supply all con...

Страница 17: ...splay Replace the thermostat Auxiliary heat does not operate Wrong mode selected Select Emergency Heat mode Thermostat in Unoccupied mode Select Override to force the thermostat Occupied heating setpo...

Страница 18: ...essages Display Function Service Indicates that there is a service alarm in accordance with the programmable Digital Inputs DI1 or DI2 Filter Indicates that the filter s is dirty in accordance with th...

Страница 19: ...pliant to CFR 47 Part 15 Subpart B Class A LONMARK Certification 3 4 pending Canada UL Listed File E27734 CCN XAPX7 Under CAN CSA C22 2 No 24 Temperature Indicating and Regulating Equipment Industry C...

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