TEC22x2-3 L
ON
W
ORKS
® Networked Heat Pump Thermostat Installation Instructions
18
Technical Specifications
Heat Pump does
not operate in
heating mode
Wrong mode
selected
Select Heating 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.
Heating setpoint
satisfied
Raise the heating setpoint.
Low balance point
attained
Mode is locked out based on outside air temperature.
Change configuration parameter Low BP to value -12°F (-24°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 Reversing Valve.
Select
O
to energize the valve in cooling operation. Valve is normally heat.
Select
B
to energize the valve in heating operation. Valve is normally cool.
Table 9: Display Messages
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 the programmable Digital Inputs (DI1 or DI2).
Frost ON
Indicates that the heating is energized by the low limit frost protection room temperature setpoint.
SetClock
Indicates that there has been a power failure greater than 6 hours and the clock needs to be reset.
Table 8: Troubleshooting Details (Part 3 of 3)
Symptom
Cause
Solution(s)
TEC22x2-3 L
ON
W
ORKS
Networked Heat Pump Thermostat (Part 1 of 2)
Power Requirements
19 to 30 VAC, 50/60 Hz, 2 VA (Terminals RC and C) at 24 VAC Nominal, Class 2 or
Safety Extra-Low Voltage (SELV)
Relay Contact Rating
30 VAC, 1.0 A Maximum, 3.0 A In-Rush, Class 2 or SELV
Digital Inputs
Voltage-Free Contacts across Terminal C to Terminals DI1 and DI2
Wire Size
Unshielded Twisted Pair - 22 AWG (0.6 mm Diameter) Minimum, 18 AWG (1.0 mm
Diameter) Recommended
L
ON
W
ORKS
Network Standard
64 Devices Maximum without repeater, 128 Devices Maximum with repeater; 6,250 ft
(1,905 m) Maximum Length (Bus Topology)
Temperature Sensor Type
Local 10k ohm Negative Temperature Coefficient (NTC) Thermistor
Temperature
Range
Backlit
Display
-40.0°F/-40.0°C to 122.0°F/ 50.0°C in 0.5° Increments
Heating
Control
40.0°F/4.5°C to 90.0°F/32.0°C
Cooling
Control
54.0°F/12.0°C to 100.0°F/38.0°C
Accuracy
Temperature
±0.9F°/±0.5C° at 70.0°F/21.0°C Typical Calibrated
