20
Troubleshooting
Flashing LED Display
The indoor unit is equipped with a receiver that has a
small panel with four LEDs that flash to indicate system
errors. Refer to the table below to view the error codes. If
more than one error has occurred, the codes will alternate
so that all codes are shown.
Make note of the code (E1, EE, etc.), then reset the display
by pressing the ON/OFF button on the unit controller.
Press the ON/OFF button a second time to reapply power
to unit. If the code is still displayed, disconnect and restore
power at the unit disconnect switch or circuit breaker. If
the problem was temporary, the code will not reappear.
If the error code reappears after power has been broken
and restored at the disconnect switch or circuit breaker,
call VRF Technical Support 1-844-438-8731.
Flashing LED Lights
Description
Operation LED Flashes Slowly
Fan coil in standby mode
Operation LED is Non Active
Fan coil is shutdown mode
Operation LED is Active
Fan coil is in running mode
Timer LED is Active
Fan coil is under timer control
Operation And Timer LED Flash Fast
Fan coil unit has no registered address upon receiving a power supply
Timer LED Flashes Fast
Communication error between indoor fan coil units and external conden-
sation units
Alarm LED Flashes Fast
Water level alarm error
Defrost LED Flashes Fast
Mode conflict error
Alarm LED Flashes Slowly
Outdoor unit error
Defrost LED Flashes Slowly
EEPROM ERROR
Table 7. Fault Code Display on Controller
Error Code
Description
F0
Communication error between the indoor unit and the wired controller (may affect other indoor units in
the system.
F1
Communication error between the indoor unit and the controller.
F2
Controller EEPROM error.
E1
Communication error between the indoor unit and the outdoor unit.
E2
T1 temperature sensor error.
E3
T2A temperature sensor error.
E4
T2B temperature sensor error.
E5
Outdoor unit error.
E6
Fan motor error.
E7
Indoor unit EEPROM error.
E8
Indoor unit DC motor error.
EE
Condensate pump error.
Notes:
LED flashing slowly = 1 flash per second
LED flashing fast = 2 flashes per second
Figure 25. Receiver for V22A
Table 6. Fault Code Display on Indoor Unit Receiver
