Mitsubishi Electric Lossnay VL-220CZGV-EB Handbook page 26

Error LED1
Symptom
Code (green)
5101 4 Outdoor air
blinks (OA) ther-
mistor re-
lated error
6801 9 PZ-43SMF-E
blinks communica-
tion error
6831 9 PZ-61DR-E
blinks communica-
tion error (no
reception)
6832 9 PZ-61DR-E
blinks communica-
tion error
(synchroni-
zation recov-
ery error)
6833 9 PZ-61DR-E
blinks communica-
tion error
(hardware
error)
6834 9 PZ-61DR-E
blinks communica-
tion error
(start bit
detection
error)
7113 10 Function set-
blinks ting error
Cause
Faulty connection of the thermis-
tor connector (CN22) on the control
circuit board
Thermistor failure
Multiple PZ-43SMF-E transmission
cables are wired using multicore
cables.
The power supply cable is too close to
the PZ-43SMF-E transmission cable.
Faulty connection of the PZ-
43SMF-E transmission cable
The wiring length of the PZ-43SMF-E
transmission cable is longer than
specified (200 m or more).
Faulty connection of the PZ-61DR-E
transmission cable
Faulty connection of the PZ-61DR-E
transmission cable
Faulty connection of the PZ-61DR-E
transmission cable
Faulty connection of the PZ-61DR-E
transmission cable
Two Lossnay units are set as the
main Lossnay (SW5-10 ON).
The air duct switching damper selec-
tor (SW6) is not set correctly.
─ 26 ─
Corrective action
Check the connector (CN22) connection.
Disconnect the connector (CN22), and
check the resistance of the thermistor.
If the equivalent thermistor resistance
differs greatly from the ambient tem-
peratures, replace the thermistor. (See (7)
Temperatures and thermistor resistance
table (page 28).)
Using the applicable cable, wire the trans-
mission cable away from one another.
Wire the power supply cable at least 5 cm
away from the transmission cable.
Check the transmission cable connections.
Check the wiring length of the transmission
cable.
Check the items described in (1) 2.
If the error re-occurs, check for noise on the
transmission cable.
If the above does not correct the problem,
replace the Lossnay circuit board or PZ-
61DR-E remote controller.
Check the items described in (1) 2.
If the error re-occurs, check for noise on the
transmission cable.
If the above does not correct the problem,
replace the Lossnay circuit board or PZ-
61DR-E remote controller.
Check the items described in (1) 2.
If the error re-occurs, check for noise on the
transmission cable.
If the above does not correct the problem,
replace the Lossnay circuit board or PZ-
61DR-E remote controller.
Check the items described in (1) 2.
If the error re-occurs, check for noise on the
transmission cable.
If the above does not correct the problem,
replace the Lossnay circuit board or PZ-
61DR-E remote controller.
Only one Lossnay unit can be set as the
main Lossnay.
(See the Lossnay technical manual.)
Make the switch (SW6) setting appropriate
for the model.
SW6-1 SW6-2 SW6-3 SW6-4
Without the damper ON
With the damper OFF
ON ON ON
ON ON ON