Samsung Mini Splits

2008 AQV, EH, DH and FJM Inverter

Troubleshooting

Sept 11 2008

Troubleshooting

• Units use either the operating lights on the Indoor (High Wall) or fault codes on the wired remote controller

OR• 3 LED’s on the Outdoor

unit PCB to show what fault has occurred, error codes can be seen on both main PCB and also test operation PCB

LED’s

High Wall Indoor Error Codes

Indoor Error Codes in detail

• Room Temp Sensor error – unit cannot read the resistance of the sensor, check with Multi meter 60 DegF = 14,200Ω70 DegF = 11,700Ω80 DegF = 9,300Ω

• Coil (Heat Exchanger) Temp Sensor error – unit cannot read the resistance of the sensor, check with Multi meter 30 DegF = 28,500Ω40 DegF = 23,000Ω50 DegF = 18,000Ω

The higher the resistance the colder the temperature that the sensor thinks it is seeing

Indoor Error Codes in detail

• Indoor Fan Motor error – the RPM sensor reads a speed below 380 RPM Check connections from Indoor PCB to fan motorCheck voltage from CN72 on PCB to fan motor – approx 180V

• EPROM/Option Code error – PCB memory is corrupted or wiped out, possibly due to voltage spike (thunderstorms etc) or low voltage conditionReprogram unit using Remote controller

• Outdoor unit Error – See specific error code on Outdoor unit

Outdoor Unit Error Codes Y G R Explanation

⊙ IPM Over Current (O.C)

⊙ Normal Operation

⊙ Comp Starting error

Comp Lock error

⊙ DC-Link voltage under/over error

⊙ ⊙ Outdoor temp sensor error (Dual/Single)

⊙ Discharge over temperature (Dual/Single)

⊙ ⊙ Discharge temp sensor error (Dual/Single)

⊙ ⊙ Current sensor error

⊙ Comp V-limit error

⊙ ⊙ Coil temp sensor error (Dual/Single)

⊙ 1min. Time out Comm. Indoor <-> Outdoor)

Fan error

⊙ OTP error

Comp rotation error

⊙ Operation condition secession (Dual only – not on AQB/v/EH units

⊙ ⊙ DC-Link voltage sensor error

⊙ I_Trip error / PFC Over current

Refrigerant Leak error (Dual/Single)

⊙ AC Line Zero Cross Signal out

⊙ Capacity mis-match

OFF

ON

⊙ BLINK

Outdoor Error Codes in detail• IPM Over Current – Also E464

• Compressor is drawing excessive current, unit will restart 9 times before error code is seen

• What are we protecting – Compressor Motor & IPM Semi Conductor

Causes –

IPM Over Current Error / OC error (E464)

OC signal

Motor Current

IPM OFF &

Motor Stop

OC Level

OC Level

IPM ( IGBT module )

UV

W

Compressor Motor

NN

SS

U+ V+ W+

U- V- W-

DCV

Ed

CausesIndoor air flow blocked in heating mode by blade closing, covering air inlet with curtain, etc.

Compressor motor or wiring short circuit, Compressor wires disconnecting from the compressor connector during rotation

Compressor lock, Compressor magnet demagnetizing

Compressor rotation error, High compressor load in low speed operation

PCB short circuit, IPM breakdown,

Outdoor Error Codes in detail

Outdoor Error Codes in detail

• Comp Starting Error (E461)–

• Compressor does not start, it has 15 seconds to start and will try 5 times to start

TIMINGCHART

Froce Allignment

charge up acceralationsyncronizing

Sensorlessmode

MotorCurrent

Speed

1sec 1.5s 2sec

2Hz 8Hz

Fixing Rotor

TIMINGCHARTTIMINGCHART

Froce Allignment

charge up acceralationsyncronizing

Sensorlessmode

MotorCurrent

Speed

1sec 1.5s 2sec

2Hz 8Hz

Fixing Rotor

Outdoor Error Codes in detail

• Comp Starting Error (E461)

• Cause :• Compressor wire trouble (disconnect etc.)

• Cycle pressure unbalance at the compressor

( Pressure difference between discharge and suction )

• Compressor trouble ( locking)

• PCB trouble (IPM open mode failure etc.)

Outdoor Error Codes in detail

• Compressor Lock Error

• Compressor is not running despite being energized. The compressor has a rotational sensor that will tell the unit if it is running or not

Unit will try to restart 3 times before displayed error code (each restart will have a 3 minute time delay)

Causes – failed Compressor, liquid slugging

Outdoor Error Codes in detail• DC Link Voltage Under/Over – Voltage across C101, 102 &

103 on the Outdoor PCB is out of range

Causes – Mains voltage spikes or brown outs, Compressor slugging liquid, bad Outdoor PCB

• Outdoor Temp Sensor Error – unit cannot read the resistance of the sensor, check with Multi meter – same curve as Indoor Temp sensors

40 DegF = 23,000Ω

60 DegF = 16,200Ω

80 DegF = 9,300Ω

Outdoor Error Codes in detail• Discharge Over Temp Error – Discharge temperature is out

of range, if it is too high this can damage the oil and the compressor

Causes – Undercharge, Refrigerant leak, failed EEV

To check EEV use a multi meter to check the resistance of the EEV solenoid coil – it has 6 separate taps which allow it to have 480 steps of movement

COIL resistance 46±2Ω(68F)

BROWN - ORANGE

BROWN - YELLOW

GRAY - BLACK

GRAY-RED

Outdoor Error Codes in detail• Discharge Temp Sensor Error – unit cannot read the

resistance of the sensor, check with Multi meter

100 DegF = 124,000Ω

120 DegF = 85,000Ω

140 DegF = 59,000Ω

• Current Sensor Error – Current draw of the unit is excessive, especially on initial start up

Causes – Mains Power problem, Outdoor Coil blocked or bad Outdoor fan motor, low refrigerant charge, locked Compressor

Outdoor Error Codes in detail• Comp V Limit Error –

• High capacity load on the system but compressor is running below 780RPM although controller is trying to speed up the compressor

Unit will restart 9 times to try and clear the fault before showing the error code, each restart will have a 3 minute time delay before the next start

Causes – High discharge pressure, possible overcharge

Outdoor Error Codes in detail• Coil Temp Sensor Error – unit cannot read the resistance of

the sensor, check with Multi meter – Same curve as Indoor coil temp sensor

60 DegF = 16,200Ω

80 DegF = 9,300Ω

100 DegF = 6,300Ω

• Outdoor Fan Error – Outdoor fan motor is not operating

Causes – Bad Outdoor fan motor, Obstruction, check for 220V AC Output to fan motor from Outdoor PCB (Blue & Red)

Outdoor Error Codes in detail• OTP Error –

• Outdoor unit PCB has an incorrect or has lost it’s program

Causes – Bad Outdoor PCB, Mains Voltage issues

Outdoor Error Codes in detail• Comp Rotation Error (E467)

• Compressor is not running, will restart 3 times to clear the fault, each start will have a 3 minute time delay before displaying the error code

• Failure of BLDC motor rotation control.• Over load condition and unable to make enough torque to

rotate.• Or the sensorless position detection system cannot detect

rotor position during rotation

• Restart will be in 3 minutes but 3 times stop makes Error.

Outdoor Error Codes in detail• Comp Rotation Error (E467)• Cause :• Cycle Overload (possible overcharge)

• Mains Power voltage changes quickly

• Cycle load changed quickly

• Compressor is bringing liquid back

• Compressor locked or motor magnet demagnetizing

• PCB trouble

Outdoor Error Codes in detail• Comp Rotation Error

(E467)Compressor Motor Torque calculated from Pressure of discharge and suction

Pd

Ps

Outdoor Error Codes in detail• Refrigerant Leak Error – Unit will recognize that performance

and temperatures are not consistent with load or compressor speed

Causes – Refrigerant undercharge for specific line set length or a leak has lost refrigerant

DC-Link voltage under/over Error (E466)

Meaning :

DC-Link voltage drop or up with some reason during operation.

System stops the compressor immediately.

Restart will be in 3 minutes but no retry limit.

Error shown on outdoor unit only.Protection purpose : Rotation troubleCause : Power line voltage changes quickly. Power line disconnect during compressor running. Lightning surge noise. Compressor liquid back. Compressor trouble. PCB trouble.

IPM ( IGBT module )

UV

W

Compressor Motor

NN

SS

U+ V+ W+

U- V- W-

DCV

Ed

Outdoor Error Codes in detail

Communication Error (E101, E202)

Meaning :

Unable to communicate between Indoor unit and Outdoor unit

for 1 minute. Cause : Communication line trouble. (Off the wire from terminal, snapping of the wire ) Miss wiring between Indoor unit and Outdoor unit Blowing the fuse in the controller. PCB trouble. WRONG OPTION CODE setting

Outdoor Error Codes in detail

Outdoor Error Codes in detail• I Trip Error – Unit current draw is too high, compressor will try

to slow down to reduce current draw, unit will restart 3 times before displaying error code

Causes – Indoor/Outdoor temperature changes, Low mains Voltage, excessive capacity load on the unit

Outdoor Error Codes in detail• AC Line Cross Signal Error – AC Line is checking incoming

power frequency 50 or 60 Hz

Causes – Bad Outdoor PCB, unless unit has been resold to a Caribbean beach hut!

• Capacity Mis-Match Error – Indoor and Outdoor unit do not communicate properly, possible mis-match of e.g. 18k Indoor Unit with a 24k Outdoor unit

Causes – Incorrect Option code flashed to the Indoor unit, reprogram the Option code at the Indoor unit, bad Indoor/Outdoor PCB

FJM Error Codes in detail• E161 – Mixed Use error code : One Indoor unit is programmed

for Heating, when other units on the system are operating in Cooling. System will not reset itself until unit with conflicting mode has been turned off

• E190 – Failure of Pipe Check : Check wiring/piping and addressing of the Indoor units

• E199 – Tracking is complete, ready for Pipe Check

• E201 – Number of Indoor units set on the rotary dial (Outdoor unit) does not match number of Indoor units tracked on the system

• After correcting these errors button K3 will reset the system

Warranty• Since 2006 units have warranty coverage of• 5 Years Compressor• 3 Years on all other Parts• 120 Days Limited Labor Warranty

• Parts are shipped out, usually on the same day using an ground service. This is dependant on a completed warranty claim form being received by Quietside

• The failed part need not be returned to Quietside unless specifically asked for

Literature AvailableSales brochure (Color)

Product Submittals

Basic Application and Technical Guide & Samsung 108,teaching sizing, usage and basic installation techniques

Warranty Booklet – Everything about Warranty

Installation and Operation Manuals

Service Manuals – very important as these units are selfdiagnostic

Support Available

Sales SupportLocal RepresentationQuietside sales staffRegionalizedCustomer Support

Technical SupportEast Coast 717 243 2535Denis, Mike, ChrisWest Coast562 699 6066John, Stu, Kevin

Website : www.Quietside.com

Thanks for attendingAny Questions??????????