:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
18
Error Diagnosis and Troubleshooting without Error Codes
Table 10 — Error Diagnosis and Troubleshooting without Error Codes
REMOTE MAINTENANCE
ELECTRICAL CIRCUIT
REFRIGERANT CIRCUIT
Possible causes of trouble
Pow
er fai
lu
re
T
he main power
tripped
Loose co
nnections
Faulty transforme
r
The voltage is too h
igh or
too low
Th
e remote contr
ol is power
ed of
f
Broken re
mote co
ntrol
D
irt
y air filter
Dir
ty conden
ser
fins
T
he se
tting te
mperatur
e is higher
/lowe
r than th
e room's (
coo
ling/heating)
T
he ambient temper
ature is too high/
low
when the
mode is cooling/he
ating
F
an mode
SILENC
E function is activated (o
ptiona
l function)
Fr
osting and d
efrostin
g frequen
tly
Unit will not start
The power switch is on but fans will not start
The temperature on the display board cannot be set
Unit is on but the wind is not cold (hot)
Unit runs, but shortly stops
The unit starts up and stops frequently
Unit runs continuously but insufficient cooling (heating)
Cool can not change to heat
Unit is noisy
Test Method / Remedy
Te
st vo
ltage
C
lose the pow
er switch
Inspect connection
s -
tighte
n
C
hange the tr
ansformer
Te
st the vol
tage
R
eplace the b
attery in the remo
te con
troller
R
eplace the r
emote contr
oller
C
lean o
r rep
lace
C
lean
Adjust the settin
g temperat
ure
T
urn o
n the
AC lat
er
Adjust to COOL
mode
T
urn o
ff the
S
ILENCE function
T
urn o
n the
AC lat
er
UNIT DAMAGE HAZARD
Be sure to turn off unit before any maintenance to prevent
damage or injury.
WARNING
