Troubleshooting - Lennox VRF V22B Series Installation Instruction

Troubleshooting

Digital Display
The indoor unit is equipped with a receiver that has a digital
display that provides an error code. Refer to the table
below to view the error codes. The error code will replace
the temperature setting displayed on the receiver. If more
than one error has occurred, the codes will alternate so
that all codes are shown.
Error Code
FE
E0
E1
E2
E3
E4
E5
E6
E7
Eb
Ed
EE
A0
D8
U4
F8
Error Code
F0
F1
E2
Figure 32. Receiver/Display
Table 7. Fault Code Display on Indoor Unit Receiver
Description
No address
Mode conflict
Communication error between indoor and main outdoor unit
T1 (Room temperature sensor) malfunction
T2 (Middle of evaporator sensor) malfunction
T2B (Outlet of evaporator sensor) malfunction
T2A (Inlet of evaporator sensor) malfunction
DC fan motor error
EEPROM failure
EXV malfunction
Outdoor unit Fault
High Water Alarm
Emergency stop
Remote off
MS self-inspection error
MS error
Table 8. Fault Code Display on Controller
Description
Communication/Address error between indoor units and wired controller
Communication/Wiring error between indoor units and wired controller
Controller temperature sensor error
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.
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