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10.0 DIAGNOSTICS AND TROUBLESHOOTING
10.2 Status and Diagnostic Codes
Descriptions of the EcoNet
TM
2-Stage Control diagnostic codes are provided below:
Dual 7-Segment
LEDs Display
Code
Diagnostic Description
Status/Possible Cause - Trouble
-
shooting Information
29 - High Pressure Control Open
The Outdoor Control detects the HPC is open
•
Outdoor coil is dirty (cooling mode)
•
Outdoor fan is not running (cooling mode)
•
Dirty indoor coil or filter (heating mode)
•
Indoor blower is not running (heating mode)
•
Liquid line restriction
•
Excessive refrigerant charge
29L - Active Protection High Pressure Control Trip
HPC has opened 3 times in the same cooling
operation, the Outdoor Control has locked out
the compressor to protect it. Outdoor Control
alternately flashes L and 29
48 - Open Run Circuit or No Compressor Current
•
Check to ensure power to compressor is
correct
•
Check capacitor
49 - Compressor Current with No Call For Cooling
•
Check for welded contactor contacts
•
Check for shorted wires
84 - Outdoor Ambient Temperature Fault
The sensor detects an abnormally low or high
outdoor ambient temperature
•
Check unit placement - If the outdoor units is
in a high temperature area, wait until the am
-
bient temperature drops and check sensor
reading.
•
Replace the sensor
•
Check if sensor is installed correctly on Out
-
door Control
93 - Internal Control Fault
The control is not functioning properly
•
Check Outdoor Control for proper system
operation
•
Replace Outdoor Control
d1 - No Shared Data
•
Replace memory card with correct system
information.
FLASHING
Diagnostics
Summary of Contents for A17 Series
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