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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.
Table 6. Fault Code Display on Indoor Unit Receiver
Flashing LED Lights
Operation LED Flashes Slowly
Operation LED is Non Active
Operation LED is Active
Timer LED is Active
Operation And Timer LED Flash Fast
Timer LED Flashes Fast
Alarm LED Flashes Fast
Defrost LED Flashes Fast
Alarm LED Flashes Slowly
Defrost LED Flashes Slowly
Notes: LED flashing slowly = 1 flash per second
LED flashing fast = 2 flashes per second
Table 7. Fault Code Display on Controller
Error Code
Description
Communication error between the indoor unit and the wired controller (may affect other indoor units in
F0
the system.
F1
Communication error between the indoor unit and the controller.
Controller EEPROM error.
F2
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.
Description
Fan coil in standby mode
Fan coil is shutdown mode
Fan coil is in running mode
Fan coil is under timer control
Fan coil unit has no registered address upon receiving a power supply
Communication error between indoor fan coil units and external conden-
sation units
Water level alarm error
Mode conflict error
Outdoor unit error
EEPROM ERROR
20
Figure 25. Receiver for V22A
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