Lennox 16B27 User Manual

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Table 8. AHC Conguration, Test and Error Recall (Fault and Lockout) Function
ERROR CODE RECALL MODE (NOTE — CONTROL MUST BE IN IDLE MODE)
Solid
E
To enter Error Code Recall function — PUSH and HOLD button until solid E appears, then RELEASE button. Control will
display up to ten error codes stored in memory. If E000 is displayed, there are no stored error codes.
Solid
_
_
_
To exit Error Code Recall function — PUSH and HOLD button until solid three horizontal bars appear, then
RELEASE button.
NOTE - Error codes are not cleared
Solid
c
To clear error codes stored in memory, continue to HOLD push button while the three horizontal bars are displayed.
Release push button when solid c is displayed. Display will blink.
Blinking
c
Push button to conrm 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.
E 120
Unresponsive Device2 - Indicates a device on the RSbus is not responding to a message sent to it by another device. Error code
is applicable to all communicating devices on the RSbus (thermostat, indoor and outdoor units). Normally indicates a malfunc-
tioning device.
E 12Y
Active Subnet Controller Missing for > 180 seconds. This indicates a data connection has been lost between a communicating
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
Conguration 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)
E 202
Incorrect air handler model size and capacity selected or wrong motor. Check for proper conguring under Conguring Unit Size
Codes.
E 203
No air handler model size and capacity selected. Check for proper conguring under Conguring 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 airow — Indoor blower motor is running at a reduced CFM (cutback mode **)
E 313
Indoor and outdoor unit capacity mismatch.
E 331
Global network connection error. This usually indicates there is a short or overladed resistance is too low condition between
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.

Lennox 16B27 Specifications

General

Brand	Lennox
Model	16B27
Category	Heat Pump
Language	English