iComfort Wi-Fi
®
7-Day Programmable Communicating Thermostat
Page 63
Table 10. Alert Codes and Troubleshooting
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.
Alert
Code
PRIORITY
CONDITION
APPLICABLE
SYSTEM
COMPONENTS
ALERT TEXT
COMPONENT OR SYSTEM OPERA
TIONAL STATE AND TROU
BLESHOOTING TIP
HOW TO CLEAR
ALERT CODE
433
Moderate /
Critical
Outdoor unit
Compressor phase current is too
high.
Error occurs when compressor
peak phase current is greater
than 28A.
Inverter will issue code 14 first
and slow down to try to reduce
the current.
If the current remains high, out
door unit will stop (compressor
and fan) – moderate condition.
Antishort cycle timer is initiated.
If condition occurs five times with
in an hour, system will lockout –
critical condition.
To clear alert code dis
connect power to out
door unit and restart.
434
Moderate /
Critical
Outdoor unit
Outdoor control has lost commu
nications with the inverter for
greater than three minutes.
Outdoor control has lost commu
nications with the inverter for
greater than three minutes.
Outdoor control will stop all com
pressor demands – moderate
condition.
Recycle power to the inverter by
de-energizing the contactor for
two minutes.
If this occurs three times in one
thermostat call, the outdoor unit
will locked out and display alert
code 434 – critical condition.
Check for loose or disconnected
electrical connections.
Interruption of main power to in
verter.
Automatically clears
when the system de
tects that the issue no
longer exists.
435
Moderate /
Critical
Outdoor unit
Inverter internal error.
When this error occurs, the out
door control will cycle power to
the inverter by opening the con
tactor for two minutes – moder
ate condition.
Outdoor control will cycle power
to the inverter three times and
then outdoor unit is locked out –
critical condition.
To clear alert code dis
connect power to out
door unit and restart.
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