Lennox 10T50 User Manual

19
Table 10. Alert Codes and Troubleshooting
Alert Code Priority
Condition
Applicable System
Component(s)
Alert Text Component or System Operational State
and Troubleshooting Tip
How to clear the alert code
130 Moderate EIM
Air handler jumper is
missing.
√ Conguration jumper missing on equipment inter face module.
√ Install the missing jumper.
NOTE: This is applicable in non-communicating appli cations only).
Automatically clears after
the missing or incor rectly
installed jumper is installed
or corrected.
131 Critical
All Lennox Communicating
thermostats.
Lennox communicating
furnace, air handler, outdoor
unit, EIM or iHarmony
System component
control parameters are
corrupted.
√ Replace the system component control if heating or cooling is not
available.
√ Try resetting the thermostat.
Will automatically clear
when sys tem component
(device) passes memory
self-test or system compo-
nent control is re placed.
132 Critical
Lennox communicating Air
handler, EIM or iHarmony
System component
control software is cor-
rupted
√ Recycle power.
√ If failure re-occurs, replace the system component control.
Manual system power reset
is re quired to recover from
this alert code.
180 Critical
Lennox communicating
Furnace, air handler or EIM
The thermostat has
found a problem with
a system component’s
outdoor temperature
sensor.
In normal operation after system component control recognizes sen-
sors, the alarm will be sent if valid tem perature reading is lost.
√ Compare outdoor sensor resistance to temperature / resistance
charts in unit installation instructions.
√ Replace sensor pack if necessary.
√ At the beginning of (any) conguration, furnace, air- handler control
or equipment interface module will detect the presence of the
sensor(s).
√ If detected (reading in range), appropriate feature will be set as
‘installed’ and shown in the ‘About’ screen.
Automatically clears upon
con guration, or sensing
normal values.
310 Moderate
Lennox communicating
Furnace, air handler, EIM or
iHarmony
There is a discharge
air temperature sensor
issue.
Compare discharge temperature sensor resistance to temperature /
resistance charts in system component installation instruction.
√ Replace discharge air sensor if failed.
√ If applicable, iHarmony will operate in non-zone mode (all dampers
open).
NOTE: Conrm there is no short or open circuits in the Lennox
communicating thermostat connections to any of the other
components in the communication system.
Automatically clears 30
seconds after condi tion is
detected as recovered or
after system restart.
345 Critical
Lennox communicating Air
handler, EIM or heat pump
The O relay on the
system component has
failed. Either the pilot
relay contacts did not
close or the relay coil
did not energize.
Possible O relay / stage 1 failure.
√ Pilot relay contacts did not close or the relay coil did not energize.
√ Replace system component (device) control.
√ If error is applicable to the XC/XP 25, the outdoor control will need
to be replaced.
Automatically clears after
the fault recovered follow-
ing reset.
347 Critical
Lennox communicating
Furnace, air handler or EIM
The Y1 relay on the
applicable system
component has failed.
Either the pilot relay
contacts did not close
or the relay coil did not
energize.
√ System operation will stop.
√ Possible Y1 relay / stage 1 failure.
√ Pilot relay contacts did not close or the relay coil did not energize.
√ There is no input back to the applicable system component control.
Automatically clears
after reset and Y1 input
sensed.

Lennox 10T50 Specifications

General

Brand	Lennox
Model	10T50
Category	Recording Equipment
Language	English