haier ac242acbea indoor fan stopping

[doormaster2008]

Happy new year one and all.hope you can help with a problem on a haier ceiling mounted system.after starting up the indoor unit runs for 4 minutes and then stops.no error code is showing on the hard wired controller.the only way to start it is to switch it off at the mains and then start again.after 4 minutes it stops again.has anyone any idea.thank you.

[Greek_engineer]

Coil sensor or refrigerant shortage

[doormaster2008]

Many thanks greek engineer.will check that out.

[install monkey]

Query indoor malfunction history:
In the state of power on or power off, press [CHECK] button, enter the malfunction-querying
mode of all indoor units in the group. Then [CHECK] and [UNIT NO.] will display, and the actual
indoor numbers will be displayed in some sequence (unit number is in decimals). At the same
time, in the time region, there will be the current malfunction and the latest time malfunction, the
displaying format is [XX：YY], in which XX stands for the current malfunction, if normal, it will
display “――”; YY stands for the latest time malfunction. The failure code of every unit will display
for 3 seconds. After the failure codes of all indoor units in the whole group are displayed, the
mode will quit automatically.
Clear abnormal state and malfunction history:
In normal state, press [CHECK] button for 5 seconds to clear abnormal states, at the same time,
wired controller will send the data of “clear abnormal state”, but the malfunction history still
retains.
In normal state, press [CHECK] button for 15 seconds, except for malfunction states, the
malfunction history in wired controller will be cleared.
Query indoor performance state:
In normal state, press both buttons of [CHECK] and [FILTER] for 5 seconds, in the set
temperature region in the screen, [XX] will display, XX is indoor number, which can be selected by
pressing [TEMP] [+] [-]. In the timer region in the screen, [YZZZ] will display, in which Y stands for
data type, ZZZ stands for the corresponding data. which can be selected by pressing [CLOCK] [+]
[-].
Y ZZZ Type
A Indoor capacity (W) Nominal cooling
capacity/10, decimal
B Request of indoor capacity（Hz） Actual value, decimal
C Temperature of indoor ambient
temp. sensor TA
Actual value, decimal
d Temperature of indoor gas pipe
sensor TC1
Actual value, decimal
E Temperature of indoor liquid pipe
sensor TC2
Actual value, decimal
F Open degree of indoor PMV Actual value, decimal
g Preset ―――
H Outdoor total capacity Actual value, decimal
In check mode, press [CHECK] to quit the check mode, and go into normal running mode.

[install monkey]

Wired control type unit failure code:
Failure description Failure code on wired
controller
Indoor ambient temp. sensor abnormal E1
Indoor coil temp. sensor abnormal E2
Outdoor ambient temp. sensor abnormal E3
Outdoor coil temp. sensor abnormal E4
Over current protection E5
Over high or low pressure protection E6
Communication between panel and indoor
abnormal
E8
Communication between indoor and outdoor
abnormal
E9
Water pump failure E0

[doormaster2008]

When check button is pressed it shows unit 1 then no failure code.after it has run for 4minutes the fan stops and the controller shows standby.

[install monkey]

when it shows standby- the indoor unit unit -fan will stop if the coil temp drops usually below 32deg, this can happen if you start the unit in heating and the room is cold, the air on temp drops and the compressor continues to heat then hopefully the coil sensor will start the fan, check resistance of coil sensor, compare to the return air sensor( when its not run for 30 mins) see if values are the same, could be low on gas,reversing valve passing, or could be ok

[doormaster2008]

Many thanks install monkey.you dont happen to know who stocks haier spares do you.