Trouble Shooting Guide - Houghton BELAIRE H2400D Owner's Manual

No display of the LCD touchscreen
 Check whether the access to the power of the RV OK?
 Poor connecting of the control line between the
unit and the LCD touchscreen, maybe fallen off?
Cooling not available
 . To make sure the mode is chosen as Cooling, and the
light of cooling mode
 The temperature setting value on the remote controller
should be lower than the indoor temperature.
 The compressor has a delay start for three minutes.
Heating not available
 To make sure the mode is chosen as Heating, and the
light of heating mode
 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.
Poor cooling or heating capacity
 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.
 Ensure that at least 2 outlets are open
 Ensure return air inlet is not blocked by objects or is not
too close to cupboards/walls etc
 Air outlet is not directed into the return air inlet
 Ducting length is too long and has too many sharp
bends
 RV is too large for the air conditioner
Fault codes displayed on the LCD touchscreen
Room temperature sensor fault
Indoor coil temperature sensor fault
Outdoor coil temperature sensor fault
Inadequate coolants
Temperature anomaly

Trouble shooting guide

is on.
is on.
E1
E2
E3
E4
E5
21
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
fracture leads to coolants leakage, compressor
fault or sensor failure.
E5: Temperature
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
overheating of the unit.)
In case there is "0" or any messy code when the

generator supplies power, this may indicate unstable
voltage and current.
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℃
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?
refrigerant-capillary tube
anomaly-outdoor coil
system for avoiding
when in cool or