21
Flash
Code
Type
Amber LED Description
Reset
Time
Mode
Possible Causes
Actions
83
System
Malfunction
LOW PRESSURE LOCKOUT
FOR 4 HOURS
(Elevated from fault code 32 af-
ter 3 occurrences)
4 Hours
Cool
Cooling in Low Ambient
region (55 °F and be-
low) with "Low Ambient
Cooling Control" dis-
abled
Enable "Low Ambient Cooling" via user inter-
face
Cool
Outside Normal Operat-
ing Range (e.g. improp-
er load calculation, sys-
tem match issue, out-
side cooling range etc.)
Consult Application Guidelines
Cool
Service Valve left
closed (Liquid or Vapor)
Ensure Service Valves are open
Cool
Undercharged System
Check system subcooling to determine charge
status, if low 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 necessary; Troubleshoot In-
door fan motor and make sure it is working;
follow Indoor Airflow troubleshooting instruction
Cool
Restriction in Filter Drier
plus Long Line Applica-
tion and filter drier on
Indoor Unit
Clean System (refer to application guideline)
and replace filter drier
Cool
Restriction due to de-
bris
Clean System (refer to application guideline)
and replace filter drier
Cool
Restriction in Circuits or
Tubing
Check kinks and straighten or replace circuits
Heat
Troubleshoot EXV (see guide below)
Heat
Outside Normal Operat-
ing Range (e.g. improp-
er load calculation, sys-
tem match issue, out-
side heating range etc.)
Consult Application Guidelines
Heat
Service Valve left
closed (Liquid Service
Valve)
Ensure Liquid Service Valve is open
Heat
Outdoor Airflow too low
or off
Check Outdoor for clogging (ice or debris) and
clean or de-ice if necessary; Troubleshoot
Outdoor fan motor and make sure it is working;
follow Outdoor Airflow troubleshooting instruc-
tion
Heat
Undercharged System
Check charge in cooling (if in Cooling Charge
Mode Ambient Range), if low add charge using
Charging Mode (follow proper charging proce-
dures); if outside cooling charge mode range,
pull out charge, weigh in using heating charge
mode
Heat
Restriction due to de-
bris
Clean System (refer to application guideline)
and replace filter drier
Both
Restriction in Filter Drier
plus filter drier on Out-
door Unit
Clean System (refer to application guideline)
and replace filter drier
Both
Expansion Device Re-
striction
If short lineset (less than 15 ft.) Troubleshoot
TXV (see guide below); replace if necessary
Summary of Contents for 189BNV EVOLUTION
Page 17: ...17 Fig 38 Fault Code Label ...
