Lennox 16B27 Manuallines page 10

Table 8. AHC Configuration, Test and Error Recall (Fault and Lockout) Function
ERROR CODE RECALL MODE (NOTE — CONTROL MUST BE IN IDLE MODE)
To enter Error Code Recall function — PUSH and HOLD button until solid E appears, then RELEASE button. Control will
Solid E
display up to ten error codes stored in memory. If E000 is displayed, there are no stored error codes.
_ To exit Error Code Recall function — PUSH and HOLD button until solid three horizontal bars appear, then
_
Solid RELEASE button.
_
NOTE - Error codes are not cleared
To clear error codes stored in memory, continue to HOLD push button while the three horizontal bars are displayed.
Solid c
Release push button when solid c is displayed. Display will blink.
c
Blinking Push button to confirm command to delete codes. Error codes are cleared.
Table 9. AHC Single Character Display — Error Codes (Communicating and Non-Communicating)
Error Codes Status of Air Handler
E 105 Device communication problem - No other devices on BUS (Communication system).
E 114 No 60 hertz power (Check voltage and frequency)
E 115
Low 24 volts (18 or less volts) - Control will restart if the error recovers.
Unresponsive Device2 - Indicates a device on the RSbus is not responding to a message sent to it by another device. Error code
E 120
is applicable to all communicating devices on the RSbus (thermostat, indoor and outdoor units). Normally indicates a malfunc-
tioning device.
Active Subnet Controller Missing for > 180 seconds. This indicates a data connection has been lost between a communicating
E 12Y device and the communicating thermostat. Device (indoor or outdoor unit) sends the alarm if no communication is established be
tween device and thermostat within three minutes.
E 130
Configuration jumper(s) is missing on board.
E 131
Non-volatile data corruption.
E 132 Internal hardware failure.
E 1B0 Outdoor air temperature sensor (OAS) out of range.
E 201 Indoor Blower communication failure - (includes indoor blower power outage)
Incorrect air handler model size and capacity selected or wrong motor. Check for proper configuring under Configuring Unit Size
E 202
Codes.
E 203
No air handler model size and capacity selected. Check for proper configuring under Configuring Unit Size Codes.
E 292
Indoor blower motor unable to start (seized bearing, stuck wheel, etc.).
E 295 Indoor blower motor over temperature (motor trip on internal protector)
E 310
Discharge air temperature sensor (DATS) out of range.
E 312
Restricted airflow — Indoor blower motor is running at a reduced CFM (cutback mode **)
E 313 Indoor and outdoor unit capacity mismatch.
Global network connection error. This usually indicates there is a short or overladed resistance is too low condition between
E 331
thermostat and indoor or outdoor units.
E 345 Jumper for second-stage cooling not removed.
E 346
Jumper for heat pump operation not removed.
E 347 Relay Y1 failure.
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