:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
19
Table 11 — Error Diagnosis and Troubleshooting without Error Codes
REMOTE MAINTENANCE
OTHERS
Possible causes of trouble
H
eavy load condition
L
oosen
hold
down bolts and / or
screws
N
ot air tight
T
he air inle
t or outlet of either
unit is blocked
In
terfer
ence
from cell phone
towers and r
emote boo
ster
s
Shipping plates remain attached
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
C
heck heat
load
T
ighten bolts
or scr
ews
C
lose all t
he windows and door
s
R
emove the obstacles
R
eco
nnect
the power
or pr
ess ON/OFF
button on r
emote contro
l to r
est
art oper
atio
n
R
emove them
