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PECO TW180 Thermostat Instruction Manual

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 the thermsotat.  
• Check power to verify that there is power (24-277 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  
SETBACK is in the 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  
• Buttons were not pressed simultaneously  
• Access requires the three digit code set by the installer.  
• Wait for unit to return to default display and retry.  
• System is in setback  
• Your thermostat has an occupancy detection system connected.  
• Check connections between TB1-5, TB1-6, TB1-7  
Dashes in the Temperature Display  
• Remote Probe Error  
• For remote probe use allow 5 minutes for thermsotat temperature to  
stabalize.  
• Check Service Menu 170 for correct selection.  
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  
• Power Jumper is not located properly at  
terminal TB2.  
• 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).  
• Verify that the Power Jumper is in the correct position for your system  
voltage. CAUTION: Do not move the Power Jumper to 24VAC position if  
your system is running at line voltage.  
If heating or cooling system doesn’t respond  
• 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  
• Pipe sensor is connected and water  
• No action is required.  
• 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 a code is displayed in the  
clock location  
• Fault is present on TB1-3 and TB1-7  
• Probe is not wired correctly or is wrong value.  
• Check SM175 for code  
• If using a remote sensor, verify probe wiring and type.  
UL60730-1 Required Information:  
Purpose of control: Operating Control,Room Thermostat  
Type 1.C Action  
Pollution Degree 2  
Impulse Voltage: 2500 V  
© COPYRIGHT 2023 PECO, INC. ALL RIGHTS RESERVED.  
P/N 74150 3220-2384 REV 04  
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GeneralDetails
NamePECO TW180 Thermostat Instruction Manual
MakePECO
LanguageEnglish
FiletypePDF (Download)
File size0.56 MB
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PECO TW180 Thermostat Instruction Manual