Error Code Description - Lennox VRF VMDB 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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