Bryant EVOLUTION V Installation Instructions Manual page 23

Flash Code Type
HIGH PRESSURE LOCK-
System
84 (Elevated from fault code
Malfunction
31 when the stage (speed)
can no longer be lowered)
System
85
(Elevated from fault code
Malfunction
Reset
Amber LED Description
Time
OUT FOR 4 HOURS
4 Hours
FAN INVERTER TEMP
LOCKOUT
15 min-
utes
62 after 3 occurrences)
Mode Possible Causes
Outside Normal Op-
erating Range (e.g.
improper load cal-
culation, system
Both
match issue, outside
cooling range, out-
side heating range
etc.)
Service Valve left
Both closed (Liquid or
Vapor)
Loose High Pres-
Both sure Switch harness
leads
Pressure Switch dis-
Both connected from Check HPS connection on ODU control
ODU Control Board
Check Outdoor Coil for clogging (ice or
debris) and clean or de ---ice if necessary;
Outdoor Airflow too
Cool
low or off
Overcharged Sys-
Cool Charging Mode (follow proper charging
tem
Check Indoor for clogging (ice or debris)
and clean or de ---ice if necessary; Trou-
Indoor Airflow too
Heat bleshoot Indoor fan motor and make sure
low or off
Restriction due to
debris leading to Clean System (refer to application guide-
Both
Overcharge when
charging
Restriction in EXV
plus Long Line Ap-
plication leading to
Both
Overcharge when
charging in Cooling
mode
Non ---condensable Clean System (refer to application guide-
Both
leading to high load
Restriction in Filter
Drier plus Long Line
Clean System (refer to application guide-
Application and filter
Cool
drier on Outdoor
Unit
Restriction in EXV
Cool
plus Overcharge
Restriction in Cir- Check kinks and straighten or replace cir-
Cool
cuits or Tubing
Check Discharge pressure with gauge, if
Faulty Pressure less than 610 +/ --- 20 psig and switch is
Both
Switch open (measure resistance) then replace
Electric Heater plus
If User Interface is not requesting Electric
Heat pump applica-
Heat
tion: Electric Heater
stuck on
Furnace plus Heat
Heat pump application:
Furnace stuck on
Restriction in Filter
Drier plus Long Line Clean System (refer to application guide-
Heat
Application and filter
drier on Indoor Unit
Expansion Device
Both
Restriction
Charge Mode Ambient Range), if low add
Overcharged Sys-
proper charging procedures); if out side
Heat
tem
Reversing Valve
Heat
Stuck in Cooling
Troubleshoot outdoor fan motor & blade
Unusual loading of
the fan
Both
Improper airflow
across inverter heat
sink
Both Inverter damage
23
Actions
Consult Application Guidelines
Ensure Service Valves are open
Check HPS harness
Troubleshoot Outdoor fan motor and
make sure it is working; follow Outdoor
Airflow troubleshooting instruction
Check system charge using Cooling
procedures)
it is working; follow Indoor Airflow trou-
bleshooting instruction
line) and replace filter drier
If long line, troubleshoot EXV
line) and replace filter drier
line) and replace filter drier
troubleshoot EXV
cuits
pressure switch
Heat check for heater relays, if on trou-
bleshoot Electric Heater
If not in Defrost and Furnace is running
same time as heat pump, troubleshoot
Furnace
line) and replace filter drier
Troubleshoot TXV
Troubleshoot EXV
Check charge in cooling (if in Cooling
charge using Charging Mode (follow
cooling charge mode range, pull out
charge, weigh in using heating charge
mode
troubleshoot reversing valve
and make sure they are working
Check for fan outlet blockage due to
snow/ice etc.
Inspect outdoor coil for obstructions
Replace inverter