Vivax ACP-24COFM70GEI, Service Manual

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2.4.6 Compressor high pressure protection
2.5 Malfunction indicator
2.4.10 Sensor malfunction testing
(1) At unit standby do not test the malfunction of outdoor tube sensor, ambient sensor;
(2) Under Heat mode, compressor continuously run 3mins later, start to test the air
exhaust sensor malfunction, under other modes for testing all along;
(3) Under Heating mode, compressor start up within 10mins, after Defrosting, Heating
oil return later within 10mins, do not test outdoor tube sensor malfunction;
(4) After other outdoor sensor turned on, test the malfunction right away, outdoor each
sensor continuously test 30s;
(5) After the sensor malfunction has been tested, stop the unit right away.
2.4.7 Compressor overload protection
2.4.8 Compressor electric heating control
If continuously 3s detected the high pressure switch break off, will treat as arrive at preset temperature point, unit will stop,
meanwhile send the “High-pressure protection” signal to indoor unit; After the high-pressure malfunction happened,
if onditnuously 6s detected the high pressure switch off, should turn power off and repower on, the whole unit can resume
to work.
If tested the compressor overload switch, according to indoor temperature arrive at preset temperature condition, unit will stop
and display the corresponding malfunction, compressor has stopped 3mins above and the compressor overload switch reset,
it will automatically resume to the running status. If protection times more than 6 times (if compressor continuously running
time more than 7 mins, that the protection times will clear to 0) that cannot automatically resume, it should to turn the power
off and repower again.
If outdoor ambient temperature is detected very low and compressor dosen’t start up, the compressor electric heating start to work;
If compressor start up or compressor doesn’t start up, but the outdoor temperature is very high, then the electric heating will not to work.
Chassis electric heating (this function is optional, it could be added according to the customer required)
When outdoor ambient temperature is very low, condenser electric heating will start to work;when outdoor ambient temperature is very high,
the condenser electric heating will not work. When entering into Defrosting, untile defrosting finished, after compressor started up 3mins
later, the indoor chassis electric heating will start to work, after compressor run 3mins and outdoor ambient temperature is very high, the
electric heating will stop to work.