Samsung AM250FNBFEB/EU User Manual

Troubleshooting
4-126 Samsung Electronics
4-4-83 Inverter Overheat error
Outdoor unit
display
(INVERTER1 PCB)
(INVERTER2 PCB)
Judgment
Method
 IGBT module internal temperature :
105°C more than (E500, E400)
Cause of
problem
 Cooling Pin and the IGBT junction part assembly
defective.
 Refrigerant cooling heat sink and refri gerant piping
assembly defective.
 Assembled bolt defective.
Both end resistance values of IGBT module pin(8, 9 pin)
1.
Cause of problem
Temperature [°C] NTC [ohm]AD [V]
10 9000 2.58
20 6000 2.33
30 4000 2.03
40 3000 1.80
50 2000 1.47
60 1600 1.29
70 1200 1.07
80 7500.76
90 6500.68
Complete
Yes
Yes
Yes
Apply the heat sink grease and then reassembly.
No
Did properly apply the heat sink grease?
(Between the heat sink and the IPM)
Yes
Tighten Bolt(Screw)
Remove foreign objects and apply the heat sink
grease. And then reassembly
No
No
Is the bolt of the heat sink fully tightened?
Did check the foreign objects between the heat sink
and IPM?
Replace Inverter PCB.
: E500(Bottom), E400 (Top)
No
IPM (IGBT) module pin 8, 9 :
Is it normally both end resistance value?
Power Off
Temperature [°C] NTC [ohm]AD [V]
100 500 0.55
105 4500.51
110 380 0.44
120 300 0.35
130 2500.30
140 200 0.25
* Enforce the discharge mode before Power Off.
(K2 : press the 6 times)
Good No Good
IGBT module pin 8, 9

Samsung AM250FNBFEB/EU Specifications

General

Type	Air conditioner indoor unit
Multi-split	-
Product color	White
Gas hose diameter	15.88 mm
Liquid hose diameter	9.52 mm
Refrigerating medium	R410A
Air conditioner functions	Heating
Heating capacity (nominal)	85300 BTU/h
Heating capacity in watts (max)	25000 W
Cooling capacity in watts (nominal)	- W
Operating temperature (heating) (T-T)	-20 - 24 °C
AC input voltage	220-240 V
Current (heating)	23.1 A
AC input frequency	50-60 Hz
Design load (cooling)	- kW
Energy efficiency scale	A+ to G
Power consumption (heating) (max)	5000 W
Hourly energy consumption (cooling)	- kWh
Energy efficiency class (heating) (Average heating season)	A+
Indoor unit type	Wall-mountable
Indoor unit depth	330 mm
Indoor unit width	518 mm
Indoor unit height	1210 mm
Indoor unit weight	104000 g
Indoor units quantity	1
Indoor unit package depth	426 mm
Indoor unit package width	652 mm
Indoor unit package height	1289 mm
Indoor unit package weight	107000 g
Indoor unit sound power level	42 dB
Indoor unit noise level (high speed)	61 dB
Outdoor unit noise level	- dB