22
Flash Code Ty p e Amber LED Description
Reset
Time
Mode Possible Causes Actions
82
System
Malfunction
SUCTION OVER TEMP
LOCKOUT
(Elevated from fault code
72 after 3 occurrences)
4Hours
Both
Incorrect refrigerant
charge
Check refrigerant amount
Cool
Uninsulated vapor
line
Insulate the vapor line
Cool
Indoor TXV opera-
tion
Troubleshoot TXV
Heat
Outdoor EXV opera-
tion
Troubleshoot EXV
Both
Reversing valve by-
pass
troubleshoot r ever sing val ve
83
System
Malfunction
LOW PRESSURE LOCK-
OUT FOR 4 HOURS
(Elevated from fault code
32 after 3 occurrences)
4Hours
Cool
Cooling in Low Am-
bient region (55 ° F
and below) with
”Low Ambient Cool-
ing Control ” dis-
abled
Enable ”Low Ambient Cooling” via user
interface
Cool
Outside Normal Op-
erating Range (e.g.
improper load cal-
culation, system
match issue, outside
cooling range etc.)
Consult Application Guidelines
Cool
Service Valve left
closed (Liquid or
Vapor)
Ensure Service Valves are open
Cool
Undercharged Sys-
tem
Check system subcooling to determine
charge status, if l ow add charge using
Charging Mode (follow proper charging
procedures)
Cool
Indoor Airflow too
low or off
Check Indoor for clogging (ice or debris)
and clean or de---ice if n ecessary; Trou-
bleshoot Indoor fan motor and make sure
it is working; follow Indoor Airflow trou-
bleshooting instruction
Cool
RestrictioninFilter
Drier plus Long Line
Application and filter
drier on Indoor Unit
Clean System (refer to application guide-
line) and replace filter drier
Cool
Restriction due to
debris
Clean System (refer to application guide-
line) and replace filter drier
Cool
RestrictioninCir-
cuits or Tubing
Check kinks and straighten or replace cir-
cuits
Heat Troubleshoot EXV (see guide below)
Heat
Outside Normal Op-
erating Range (e.g.
improper load cal-
culation, system
match issue, outside
heating range etc.)
Consult Application Guidelines
Heat
Service Valve left
closed (Liquid S er -
vice Valve)
Ensure Liquid Service Valve is open
Heat
Outdoor Airflow too
low or off
Check Outdoor for clogging (ice or de-
bris) and clean or de---ice if necessary;
Tr oubleshoot Outdoor fan motor a nd
make sure it is working; follow Outdoor
Airflow troubleshooting instruction
Heat
Undercharged Sys-
tem
Check charge in cooling (if in Cooling
Charge Mode Ambient Range), if low add
charge using Charging Mode (follow
proper charging procedures); if outside
cooling charge mode range, pull out
charge, weigh in using heating charge
mode
Heat
Restriction due to
debris
Clean System (refer to application guide-
line) and replace filter drier
Both
RestrictioninFilter
Drier plus filter drier
on Outdoor Unit
Clean System (refer to application guide-
line) and replace filter drier
Both
Expansion Device
Restriction
If short lineset (less than 15 ft.) Trou-
bleshoot TXV (see guide below); replace
if necessary