Lennox iComfort S30 Installation And Setup Manual page 44

Table 1. Alert Codes and Troubleshooting
Applicable
Alert Priority
System
Code Condition
Components
Moderate /
428 Outdoor unit
Critical
Moderate /
429 Outdoor unit
Critical
Moderate /
430 Outdoor unit
Critical
Moderate /
431 Outdoor unit
Critical
Moderate /
432 Outdoor unit
Critical
Moderate /
433 Outdoor unit
Critical
Critical alerts are displayed on the Home screen, in the Homeowner alert button, and in the Installer alert button. Minor and
moderate alerts are found only in the Installer alert button.
Alert Text Component or System Operational State and Troubleshooting Tip
" If condition is detected, outdoor unit will stop (compressor and fan) – moderate con­
The inverter has detect­
dition.
ed a high main input cur­
" Anti-short cycle is initiated.
.
rent condition
" If condition occurs 10 times within an hour, system will lockout – critical condition.
" On a call for compressor operation, if DC link power in inverter does not rise above
180 VDC for 2- and 3 -ton models, 250 VDC for 4- and 5-ton models within 30 sec­
onds, the control will display a moderate code.
" If condition is detected, outdoor unit will stop (compressor and fan) – moderate con­
dition.
The inverter has detect­
" An anti-short cycle timer is initiated. If condition occurs 10 times within a 60 minute
ed a DC link low voltage
condition . rolling time period, system will lock out and display alert code 429 – critical condi­
tion.
" The outdoor control anti-short cycle timer will time out and the unit will recycle the
demand.
" Replace outdoor inverter.
" If condition is detected, outdoor unit will stop (compressor and fan) – moderate con­
dition.
Compressor start-up fail­
" Anti-short cycle is initiated.
ure
" If condition occurs 10 times within an hour, system will lockout – critical condition.
" Error occurs when PFC detects an over current condition of 100A peak.
" If condition is detected, outdoor unit will stop (compressor and fan) – moderate con­
The inverter has detect­
dition.
ed a PFC circuit over-
.
current condition " Anti-short cycle timer is initiated.
" If condition occurs 10 times within an hour, system will lockout – critical condition.
" Error occurs when the DC link capacitor voltage is greater than 480VDC.
" If condition is detected, outdoor unit will stop (compressor and fan) – moderate con­
The inverter has detect­
dition.
ed a DC link high volt­
age condition. " Anti-short cycle timer is initiated.
" If condition occurs 10 times within an hour, system will lockout – critical condition.
" 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, outdoor unit will stop (compressor and fan) – moderate
Compressor phase cur­
rent is too high. condition.
" Anti­short cycle timer is initiated.
" If condition occurs five times within an hour, system will lockout – critical condition.
44
How to clear alert code
To clear, disconnect power to out­
door unit and restart.
Automatically clears when the
system detects that the issue no
longer exists.
To clear, disconnect power to out­
door unit and restart.
To clear, disconnect power to out­
door unit and restart.
To clear, disconnect power to out­
door unit and restart.
To clear alert code disconnect
power to outdoor unit and restart.