20
No display of the plenum when press the On/Off
Cooling not available
Heating not available
Poor cooling capacity
Fault codes displayed on the panel
E1: Room temperature sensor
Fault in connection to temperature sensor or
other damage.
E2: Indoor coil temperature sensor
Fault in connection to temperature sensor or
other damage.
E3: Outdoor coil temperature sensor
Fault in
connection to temperature sensor or other
damage.
E4:
Insufficient
refrigerant-capillary
tube
fracture leads to coolants leakage, compressor
fault or sensor failure.
E5:
Temperature
anomaly-outdoor
coil
temperature too high when cooling or too low
when heating.(When cooling, the display of E5
indicates the outdoor temperature exceeds 68
℃
.
It is likely due to the reduction of air low of the
condenser, poor working of condenser fan or
sensor failure; when heating, if the outdoor
temperature is higher than 18
℃
, the external air
blower may be on and off circularly. The
occurrence of this is not a fault, but the self
protection of the system for avoiding overheating
of the unit.)
Answer the following questions as far as possible
when contacting for fault diagnosis:
If any error code is displayed?
Whether the display panel is in normal
operation or not? Whether the temperature
displays from 16 to 30
℃
?
Whether the temperature can be freely
adjusted from 16 to 30
℃
when in cool or
heat mode?
Whether there is “0” shown in the display?
Whether any messy code on the display?
Whether the switching of low, medium and
high speed wind is available after speed
setting? Whether any air out?
Whether the compressor is working or not?
Trouble shooting guide
Check whether the access to the power of the RV OK?
Check whether the remote battery is OK?
Check whether the remote control is off ?
Poor connecting of the control line between the
outdoor unit and the plenum, maybe fallen off.
. To make sure the mode is chosen as Cooling, and the
light of cooling mode
is on.
The temperature setting value on the remote controller
should be lower than the indoor temperature.
The compressor has a delay start for three minutes.
To make sure the mode is chosen as Heating, and the
light of heating mode
is on.
The temperature setting value on the remote controller
should be higher than the indoor temperature; the
compressor has a delay start for three minutes.
More time would be needed for starting heating under
extremely cold condition.
Ensure the filter is clean.
Turn on the fan to high FAN to obtain the maximum
capacity.
Make sure all the doors and windows, as well as the
sunroof are closed.
Curtains and awnings can be used to decrease the
heating load.
Communication fault
E0
Room temperature sensor fault
E1
Indoor coil temperature sensor fault
E2
Outdoor coil temperature sensor fault
E3
Inadequate coolants
E4
Temperature anomaly
E5
In case there is “0” or any messy code when the
generator supplies power, this may indicate unstable
voltage and current.