SGE Heat Pump@Khaolak Laguna Resort : Heat Pump Thai Brand

1. 

   siamgreenengineer

   07/01/2017 |

   Heat Pump Thailand brand by Siam Green Engineer Co.,Ltd. install SGE Heat Pump under light ” Leaf ” Thailand brand at
   Khaolak Laguna Resort model 25kW x 3 units

   Checking the mistake and method solve SGE Heat Pump system.

   Water Pump Overload
   The mistake : cause is adjust value rate overload not devious with rate of water overload pump. or

   Overload mistake.

   Modify : Checking currant and adjust rate .

   : Change new overload.

   2.Compressor alarm high pressure

   The mistake : Water pump not run

   : Over liquid 134a

   : Water flow rate less more usual or pressure less more 2 bar

   : Control valve have problem ( min PID )

   : The mistake of sensor

   Modify : Solve water pump

   : Reduce liquid R 134a

   : Adjust control valve up

   : Checking prob sensor may be mistake so make show high pressure , checking temperature water out from heat pump

   is real temperature hot water out.

   : Change a new pressure sensor

   3.Compressor alarm low pressor

   The mistake : Liquid R 134a leak

   : Evaporator block up or filter dirty.

   : Blower have mistake not run

   :Expansion valve or dryer block up make cannot flow liquid R134a

   : Mistake of sensor

   Modify : Checking leak and solve when finished vacuum system and fill liquid R134a

   : Clean Evaporator and filter.

   : Checking fan blower motor .

   : Change Expansion valve or dryer

   : Change pressure sensor

   4.Compressor overload

   The mistake : Alarm the current of compressor is high over rate standard from the rate of compressor overload adjust incorrect.

   Modify ; Checking current rate of compressor and adjust.

   5.Refrigerant insufficient

   The mistake : Alarm the temperature hot water out is low more than setting rate and not over 10 C it over more 30 minute.

   which may be liquid R134a is low more standard rate. sample is setting hot water outlet 55 C but hot water outlet flow

   low more 45 C

   Modify : Checking liquid R134a in system and fill from is loss.

   : Reduce % rate of control valve

   : Adjust% control valve ( min PID ) over solve by adjust min PID etc from 3.5 reduce be 3

   6.Probe of tank / Outlet / Disc. / Suction / Inlet Air / Inlet Water alarm from sensor measure temperature tank / hot water outlet / Liquid part of

   compress / liquid part of suction / air flow to filter / water inlet .

   The mistake : Sensor measure temperature mistake or loose cable or line sensor lack of access.

   Modify : Checking line sensor may be loose cable or lack of access

   : Change new sensor.

   7.Power Protection : Alarm phase or Voltage

   The mistake : Electricity alternating phase or power is not fully phase.

   Modify : Checking voltage is 380 – 420 or not

   : Switching 1 pair.

   8.Blower overload from the current of motor is high over setting rate

   The mistake : May be adjust overload blower rate not standard.

   : Overload mistake.

   Modify : Check current of motor blower and adjust for the suitable.

   : Change overload

   9.High heating water from alarm hot water outlet temperature is high over high temperature start

   The mistake : Water inlet to SGE Heat Pump have high over temperature sample : water from return pump flow is over hot

   which hot water inlet should not over 60 C.

   : Sensor mistake

   : Adjust rate of control valve not suitable.

   Modify : Check water inlet must not over 60 C

   : Check outlet temperature is real may be sensor mistake or loose cable which will show rate temperature not real rate.

   : Check setting % max and min control valve.

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