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Lennox LNINVC063 User Manual

Lennox LNINVC063
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55
Installation and Maintenance
Service Manual
12
Malfunction
of outdoor
ambient
temperature
sensor
F3
Flash
3 times
every 3s
During cooling
and drying
operation,
compressor and
outdoor fan stop
while indoor
fan operates.
During heating
operation, all
loads stop.
1.T-SENSOR
terminal hasn’t
been inserted
tightly;
2. Hardware
malfunction of
outdoor unit's
main board;
1. After de-
energization,
reinsert
T-SENSOR
terminal tightly;
2. Replace
outdoor unit's
main board
AP1;
13
Malfunction
of outdoor
condenser
temperature
sensor
F4
Flash
4 times
every 3s
During cooling
and drying
operation,
compressor and
outdoor fan stop
while indoor
fan operates.
During heating
operation, all
loads stop.
14
Malfunction
of outdoor
discharge
temperature
sensor
F5
Flash
5 times
every 3s
During cooling
and drying
operation,
compressor and
outdoor fan stop
while indoor
fan operates.
During heating
operation, all
loads stop.
15
Limit/
decrease
frequency
due to
overload
F6
Flash
6 times
every 3s
All loads
operates
normally, while
operation
frequency of
compressor
decreases.
See
9.3(diagnosis
of overheating
prevention
and overload
protection)
Refer to
maintenance
owchart
16
Decrease
frequency
due to
overcurrent
F8
Flash
8 times
every 3s
All loads
operates
normally, while
operation
frequency of
compressor
decreases.
Input power
voltage is too
low;
1. Check
whether power
supply network
is abnormal;
Pressure of
system is too
high; overload
2. Reduce
load;

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Lennox LNINVC063 Specifications

General IconGeneral
BrandLennox
ModelLNINVC063
CategoryAir Handlers
LanguageEnglish

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