Service Manual -
HRG18xxS1P
508206-01
Issue 2140
Page 30 of 83
System Operation and Service
7-Segment Alert and System Status Codes
Alert codes are displayed using the 7-segment display
located on the outdoor control.
NOTE:
System fault and lockout codes take precedence
over system status codes (cooling, heating operating
percentages or defrost/dehumidification).
The 7-segment will display an abnormal condition (error
code) when detected in the system. A list of the codes are
shown in Table 11.
Resetting Alert Codes
Alert codes can be reset manually or automatically:
1. Manual Reset
Manual reset can be achieved by one of the following
methods:
•
Disconnecting R wire from the outdoor control R
terminal.
•
Turning the indoor unit off and back on again
After power up, all currently displayed codes are cleared.
2. Automatic Reset
After an alert is detected, the outdoor control continues
to monitor the unit’s system and compressor operations.
When/if conditions return to normal, the alert code is
turned off automatically.
NOTE:
Error codes can be recalled by following information
shown in Table 12.
GF= Gas Furnace, AH=Air Handler, ID=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OD=Outdoor Unit (AC or HP), ZA=Zone system and TS=Thermostat
Alert
Code
Inverter
Code
Inverter Flash
Code
Priority
Condition
Actual Displayed
Alert Text
Component or System Operational State
and Troubleshooting Tip
How to Clear
Alert Code
Red
LED
Green
LED
N/A
N/A
ON
OFF
N/A
HRG1836S1P only: Indicates inverter is operating normally.
N/A
N/A
ON
ON
N/A
HRG1860S1P only: Indicates inverter is operating normally.
N/A
N/A
OFF
OFF
N/A
Indicates inverter is NOT energized.
125
Service
Urgent
Control Hardware
Problem
There is a hardware problem on a system component control. There is a
control hardware problem.
Replace the control if the problem prevents operation and is persistent.
Automatically clears
five minutes after
the issue no longer
exists.
132
Service
Urgent
Device Control
Software Fault
System component control software is corrupted.
• Recycle power.
• If failure re-occurs, replace the system component control.
Manual system
power reset is
required to recover
from this alert code.
180
Service
Soon
Outdoor
Temperature
Sensor Problem
The thermostat has found a problem with the outdoor sensor in the outdoor
unit or the optional outdoor sensor connected to the indoor unit. In normal
operation after system component control recognizes sensors, the alert
code will be sent if valid temperature reading is lost.
• Compare outdoor sensor resistance to temperature / resistance charts in
unit installation instructions. Replace sensor pack or stand alone outdoor
sensor.
• At the beginning of (any) configuration, 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 configuration,
or sensing normal
values.
Table 12. Alert Codes and Troubleshooting