Error Code - Carrier 40WAW007 Installation And Maintenance Instructions Manual

Table 3 -- LED Display Indicators
ERROR CODE MODE/STATUS
[NO ERROR]
E0
E1
E2
E3
E4
E7
Ed
EE
FE
LED DISPLAY
Operation Light ON
Operation Light OFF
Operation Light Flashing Slow*
Timer Light ON
Timer Light OFF
Defrost / Fan Light ON (40WAW024 only)
Defrost / Fan Light OFF (40WAW024 only)
Defrost / Fan Light Flashing Fastt
40WAW024 only)
Timer Light Flashing Fast
Operation Light Flashing Fast
Starting
Shutdown
Standby
Timing ON
Timing OFF
System Defrost ON
System Defrost OFF
Heating / Cooling Mode Conflict Error
Defrost / Fan Light Flashing Slow
40WAW024 only)
Alarm Light Flashing Slow (40WAW024 only) Outdoor Unit Error
Alarm Light Flashing Fast (40WAW024 only) Water Level Error
Operation and Timer Lights Flashing Fast Indoor Unit Turned ON But Does Not Have An Address
*Flashing Slow = Flashing once per second.
tFlashing Fast = Flashing twice per second.
Table 4 -- Troubleshooting
ERROR DISPLAY
Communication Error Between Indoor and Outdoor Unit
Check Indoor Ambient Temperature Sensor (T1)
Check Evaporator Temperature Sensor (T2)
Check Evaporator Outlet Temperature Sensor (T2B)
EEPROM Error (Data Storage)
E0
E1
E2, E3,
E4
Defrost Light Flashing Fast (Heating/
Cooling Mode Conflict Error)
(40WAW024 only)
Timer Light Flashing Fast
(Communication Error)
Operation Light Flashing Fast
(Sensor Error)
POSSIBLE CAUSES
System is in cooling or fan only mode and
heating signal is received from a unit on the
system,
System is in heating mode and cooling sig-
nal is received from a unit on the system,
Signal wires are short-circuited or
disconnected,
Signal wire order is incorrect,
Signal wires crossing over high voltage
_ower wires.
Signal wire close to electromagnetic source.
Signal wire length exceeds 360 ft.
PC board fault.
Loose connection at port on PC board.
Sensor is short-circuited.
PC board fault.
Chip or PC board fault. Defrost Light Flashing Slow
(EEPROM Error)
(40WAW024 only)
Alarm Light Flashing Slow (Outdoor
Unit Error)
(40WAW024 only)
POSSIBLE SOLUTIONS
All units should be in cooling mode for system to
stay in cooling mode,
All units should be in heating mode.
Check or reconnect signal wire.
Correct signal wire order.
Separate and distance the signal wire from high
voltage power wires.
Distance signal wires from electromagnetic
source.
Reduce the signal wire length.
Replace PC board.
Tighten the connection at port on PC board.
Using multi-meter, measure resistance of the sen-
sor. If the resistance is < 100 ohms, change the
sensor.
Replace PC board.
Replace PC board.
E7
Outdoor unit fault. Refer to outdoor unit troubleshooting guide.
Ed
Loose connection or disconnected at port
on PC board.
Water level float is stuck.
Trap slope is too steep.
Drain pipe is too long.
Drain pump faulty.
Indoor unit without address.
Alarm Light Flashing Fast (Water
Level Error)
(40WAW024 only)
EE
FE
Operation and Timer Lights Flashing
Fast Together
(Address Error)
Tighten the connection or reconnect at port on PC
board.
Inspect the float.
Adjust the trap slope.
Adjust the length of drain pipe.
Replace the drain pump.
Run automatic addressing option at the outdoor
unit.
Use remote wireless or wired controller to re-
address indoor unit.
]!