Lennox iComfort Wi-Fi Setup Manual page 47

Table 10. Alert Codes and Troubleshooting
Alert PRIORITY
Code CONDITION
Furnace, air han­
dler, equipment in­
Moderate /
114
terface or IHarmo­
Critical
ny damper control
Furnace, air han­
115 Critical
dler or equipment
interface module
IHarmony Damper
115 Critical
117 Minor
nace, air handler,
120 Moderate
equipment inter­
face or IHarmony
®
iComfort Wi-Fi
APPLICABLE
SYSTEM ALERT TEXT
COMPONENTS
There is a frequency / distortion
problem with the power to a
specific system component.
module
Primary 24VAC power to a sys­
tem component control is lower
than the required range of 18 to
30VAC.
Secondary 24VAC power to the
damper control module is low.
control module
The reporting unit has poor
Furnace
earth grounding.
Thermostat, fur­
outdoor unit,
There is a delay in the system
component responding to the
system.
damper control
module
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
•
This alert code may indicate
transformer overloading.
•
Check the voltage and line power
frequency.
•
Check the generator operating
frequency, if the system is run­
ning on back-up power.
•
Correct voltage and frequency
problems.
•
System will resume normal oper­
ation five seconds after fault re­
covered.
•
All applicable system component
outputs are disabled – moderate
condition.
•
After 10 minutes, the priority con­
dition is escalated – critical con­
dition.
•
Damper control module will oper­
ate in central mode only until
proper voltage is restored or fre­
quency distortion is resolved –
moderate condition.
•
Primary 24VAC voltage is low
(range is 18 to 30 volts).
•
Check and correct voltage.
•
Check for additional power-rob­
bing system component (device)
connected to system.
•
This alert code may require the
installation of an additional or
larger VA transformer.
•
Secondary 24VAC voltage is low
(range is 18 to 30 volts).
•
Check and correct voltage.
•
Check for additional power-rob­
bing equipment connected to sys­
tem.
•
This alert code may require the
installation of an additional or
larger VA transformer.
•
Damper control module will oper­
ate in non-zone mode until proper
voltage is restored.
•
Provide proper grounding for the
system component (device).
•
Check for proper earth ground to
the system.
•
Typically this alert code does not
cause any operational issues and
will clear on its own.
•
This alert code is usually caused
by a delay in the outdoor unit re­
sponding to the thermostat.
•
Check all wiring connections.
7-Day Programmable Communicating Thermostat
Page 47
HOW TO CLEAR
ALERT CODE
Automatically clears
when the system de­
tects the issue no
longer exists.
Automatically clears
when the system de­
tects the issue no
longer exists.
Automatically clears
when the system de­
tects the issue no
longer exists.
Automatically clears
30 seconds after the
issue is corrected.
Automatically clears
after an unresponsive
system component
(device) responds to
any inquiry.