Lennox iComfort Wi-Fi Setup Manual page 53

Table 10. Alert Codes and Troubleshooting
Alert PRIORITY
Code CONDITION
295 Minor
Furnace, air han­
dler equipment in­
310 Critical
terface module or
311 Minor
312 Minor
Furnace, air han­
313 Minor
dler and outdoor
344 Critical
®
iComfort Wi-Fi
APPLICABLE
SYSTEM ALERT TEXT
COMPONENTS
The indoor blower motor is
Furnace
overheating.
There is a problem with system
component's discharge air sen­
sor.
damper control
module
The heat firing rate has been
reduced to match available air­
Furnace
flow (cutback mode).
The indoor blower cannot pro­
Furnace or air
vide the requested CFM due to
handler
high static pressure.
The indoor and outdoor unit ca­
pacities do not match.
unit
Relay Y1 Failure
Furnace
Critical alerts are displayed on the Home screen, in the Home­
owner alert button, and in the Installer alert button. Minor and
moderate alerts are found only in the Installer alert button.
COMPONENT OR SYSTEM OPERA­
TIONAL STATE AND TROU­
BLESHOOTING TIP
•
Indoor blower motor over temper­
ature (motor tripped on internal
protector).
•
Check motor bearings and amps.
•
Replace indoor blower motor if
necessary.
•
Compare outdoor sensor resis­
tance to temperature / resistance
charts in system component in­
stallation instruction.
•
Replace discharge air sensor if
necessary.
•
Damper control module will oper­
ate in non-zone mode (all
dampers open).
•
This is a Warning Only alert code.
•
Furnace blower in cutback mode
due to restricted airflow.
•
Reduce firing rate every 60 sec­
onds to match available CFM.
•
Check air filter and duct system.
•
To clear, replace air filter if need­
ed or repair or add additional
ducting.
•
Two-stage controls will reduce fir­
ing rate to first stage.
•
This is a Warning Only alert code.
•
Possible restricted airflow - Indoor
blower is running at a reduced
CFM (Cutback Mode).
•
The variable speed motor has
pre-set speed and torque limiters
to protect the motor from damage
caused by operating outside of
design parameters (0 to 0.8" e.g.
total external static pressure).
•
Check air filter and duct system.
•
To clear, replace air filter if need­
ed or repair or add additional
ducting.
•
This is a Warning Only alert code.
•
Check for proper system compo­
nent configuring in installation in­
structions.
•
The system will operate, but
might not meet efficiency and ca­
pacity parameters.
•
Possible Y1 relay failure.
•
All system operations will stop.
7-Day Programmable Communicating Thermostat
Page 53
HOW TO CLEAR
ALERT CODE
Automatically clears
after blower demand is
satisfied.
Automatically clears
30 seconds after fault
is detected as recov­
ered.
Automatically clears
when a heat call finish­
es successfully.
Automatically clears
after the current ser­
vice demand is satis­
fied.
Automatically clears
after commissioning is
complete.
Automatically clears
300 seconds after Y1
input sensed OFF.