PECO T8168B-2 BACnet Proportional Thermostat Installation Guide
520
Default Display Icons
0- Time, Temp, SP (Default)
1- Time, Temp
Icons that will be displayed in the default state.
NOTE: Setpoint will not be displayed if T8168 System Mode is OFF.
2- Time
3- Temp
4- None
5 - Set Point Only
530
540
Revision
Displays Current Revision Information
0- Disable (Default)
Factory Default Reset
When enable is selected the device will return to factory default settings.
Unit enters AP Mode and broadcasts SSID “T8168 XXXXX”
1- Enable
550
600
Wi-Fi Reset
Set to 1
Cooling System Output
Test
0- Disable (Default)
Cool Operation is enabled and the associated output based on Service Menu 110. The
output is activated for 10 minutes. The ON/OFF or 0-10 VDC Fan output will automatically
turn on.
1- Stage 1 Cooling/Y1 (TWF)
2 – Stage 2 Cooling/Y2 (TWF)
0- Disable (Default)
610
620
Heating System Output
Test
Heat Operation is enabled and the associated output based on Service Menu 110. The
output is activated for 10 minutes. The ON/OFF or 0-10 VDC Fan output will automatically
turn on.
1- Stage 1 Heating/W1 (TWF)
2 – Stage 2 Heating/W2 (TWF)
0- Disable (Default)
Fan System Output Test
If enabled is selected it will activate Based On Service Menu 110. The output will be
enabled for 10 minutes. If a different menu is selected the output will be disabled. Wheth-
er the fan output is a triac or a 0-10VDC/4-20mA is determined by Service Menu 112
1- Enable G Fan Output/GD Low
2 – Enable Y2 Fan Output/GD Med Cool
3 - Enable G1 Fan Output/GD Hi Cool
4 – Enable GD Med Heat
5 – Enable GD High Heat
TROUBLESHOOTING & FREQUENTLY ASKED QUESTIONS
In case of difficulty, try one of the following suggestions below.
Symptom
Potential Cause(s)
Solution
If display screen is blank
• Thermostat is not being powered
• Check to assure proper wiring of power to (24 VAC-1) and (24 VAC-2) .
• Check power to verify that there is 24 VAC available.
• Default Display is set to “4” (None)
• Keypad Lockout may be enabled
• Check Service Menu 520.
If keys do not allow manual entry
Service Menu does not display
• Access Service Menu 340. Within this menu, select option “0” to assure
there is no keypad lockout (so manual entry is enabled).
• PIN access is enabled
• Access requires the three digit code set by the installer.
•
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• Wait for unit to return to default display and retry.
Err In Clock Dispay
Door in Clock Display
Fdd in Clock Display
• Indicates a service fault input
• Indicates service is required.
• Door or window is open
• Close door and /or window to clear fault.
• Indicates service is required.
• Indicate an economizer or other system fault
If no heating or cooling is running, but there is a call
for heat or cool (Heat/Cool appears on display) in
Auto mode
• Heating or cooling equipment is not operating
• Minimum off time has not been met
• Check Service Menu 110 to assure that the correct option is selected to
match the system type.
• Check wiring, using output tests to verify (see Service Menus 600, 610,
620).
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• System type selection is incorrect
• System type selection is incorrect
• Check Service Menus 110 and 120 to assure that the correct option is
selected to match the system type.
If heating and cooling equipment are running at the
same time
• Check Service Menu 110 to assure that the correct option to match the
system type is selected.
• Verify wiring connections
• Separate the heating and cooling wires, using output tests to verify (see
Service Menus 600, 610, 620).
If Demand Indicator light is red
• Heating is occurring
• No action is required.
If Demand Indicator light is green
Fan outputs turned off after 3-minutes
• Cooling system is running
• No action is required.
• Pipe sensor is connected and water
• Building Boiler or Chillers may be turned off.
temperarture between hot water and cold water • See Service Menus 171, 172, 173 & 174
set points
Menu Item Not available
• Some service menus are disabled when not in
use or feature is not available.
• Verify system type selection and feature selection is correct.
Red LED is Flashing and code is in clock location
• Fault is present on SC and S1 input
• Check SM175 for code
• If using a remote sensor, verify probe wiring.
© COPYRIGHT 2024 PECO, INC. ALL RIGHTS RESERVED.
P/N 74599 3220-2406 REV 00
7
| General | Details |
|---|---|
| Name | PECO T8168B-2 BACnet Proportional Thermostat Installation Guide |
| Make | PECO |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.42 MB |
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