Carrier EVOLUTION 189BNV Service Manual page 26

Flash Code Type Amber LED Description
HIGH TORQUE LOCKOUT
System
(Elevated from fault code
99
Malfunction 98 when 98 occurs at low-
Reset
Time
2 hours
est stage)
Mode Possible Causes
charge status, if high remove charge using
Cool Overcharged System
Check charge in heating mode per heating
Heat Overcharged System
match then pull out charge, weigh in using
Both Miswire
Outdoor Airflow too
Both
low or off
Expansion Device
Both
Restriction
Check charge in heating mode per heating
Heat Overcharged System
match then pull out charge, weigh in using
26
Actions
Check system subcooling to determine
Charging Mode (follow proper charging
procedures)
check charge chart. If pressures do not
heating charge method
Check miswire of compressor leads at ter-
minals U,V,W
Check ODU coil for clogging (ice or de-
bris) and clean if necessary; Troubleshoot
ODU fan motor and make sure it is work-
ing
Troubleshoot TXV
Troubleshoot EXV
check charge chart. If pressures do not
heating charge method