Bryant 189BNV EVOLUTION, Руководство по обслуживанию

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22
Flash
Code
Actions Possible Causes Mode
Reset
Time
Amber LED Description Type
84
System Mal-
function
HIGH PRESSURE LOCKOUT
FOR 4 HOURS
(Elevated from fault code 31
when the stage (speed) can no
longer be lowered)
4 Hours
Both
Outside Normal Operat-
ing Range (e.g. improp-
er load calculation, sys-
tem match issue, out-
side cooling range, out-
side heating range etc.)
Consult Application Guidelines
Both
Service Valve left
closed (Liquid or Vapor)
Ensure Service Valves are open
Both
Loose High Pressure
Switch harness leads
Check HPS harness
Both
Pressure Switch dis-
connected from ODU
Control Board
Check HPS connection on ODU control
Cool
Outdoor Airflow too low
or off
Check Outdoor Coil 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
Cool Overcharged System
Check system charge using Cooling Charging
Mode (follow proper charging procedures)
Heat
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
Both
Restriction due to de-
bris leading to Over-
charge when charging
Clean System (refer to application guideline)
and replace filter drier
Both
Restriction in EXV plus
Long Line Application
leading to Overcharge
when charging in Cool-
ing mode
If long line, troubleshoot EXV
Both
Non-condensable lead-
ing to high load
Clean System (refer to application guideline)
and replace filter drier
Cool
Restriction in Filter Drier
plus Long Line Applica-
tion and filter drier on
Outdoor Unit
Clean System (refer to application guideline)
and replace filter drier
Cool
Restriction in EXV plus
Overcharge
troubleshoot EXV
Cool
Restriction in Circuits or
Tubing
Check kinks and straighten or replace circuits
Both Faulty Pressure Switch
Check Discharge pressure with gauge, if less
than 600 +/- 20 psig and switch is open (mea-
sure resistance) then replace pressure switch
Heat
Electric Heater plus
Heat pump application:
Electric Heater stuck on
If User Interface is not requesting Electric Heat
check for heater relays, if on troubleshoot
Electric Heater
Heat
Furnace plus Heat
pump application: Fur-
nace stuck on
If not in Defrost and Furnace is running same
time as heat pump, troubleshoot Furnace
Heat
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
Both
Expansion Device Re-
striction
Troubleshoot TXV
Troubleshoot EXV
Heat Overcharged 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 out side cooling charge mode range,
pull out charge, weigh in using heating charge
mode
Heat
Reversing Valve Stuck
in Cooling
troubleshoot reversing valve
85
System
Malfunction
FAN INVERTER TEMP LOCK-
OUT
(Elevated from fault code 62 af-
ter 3 occurrences)
15 minutes
Both
Unusual loading of the
fan
Troubleshoot outdoor fan motor & blade and
make sure they are working
Check for fan outlet blockage due to snow/ice
etc.
Improper airflow across
inverter heat sink
Inspect outdoor coil for obstructions
Both Inverter damage Replace inverter
86
System
Malfunction
FAN INVERTER CURRENT
LOCKOUT
(Elevated from fault code 63 af-
ter 5 occurrences)
5 minutes Both
Sudden supply voltage
change
Investigate incoming voltage
Sudden load change on
fan/motor
Troubleshoot outdoor fan motor & blade and
make sure they are working. Check harness
and connectors
Inverter damage Replace inverter