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Samsung Mini Splits 2008 AQV, EH, DH and FJM Inverter Troubleshooting Sept 11 2008.

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Presentation on theme: "Samsung Mini Splits 2008 AQV, EH, DH and FJM Inverter Troubleshooting Sept 11 2008."— Presentation transcript:

1 Samsung Mini Splits 2008 AQV, EH, DH and FJM Inverter Troubleshooting Sept

2 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

3 High Wall Indoor Error Codes

4 Indoor Error Codes in detail Room Temp Sensor error – unit cannot read the resistance of the sensor, check with Multi meter 60 DegF = 14,200Ω 70 DegF = 11,700Ω 80 DegF = 9,300Ω Coil (Heat Exchanger) Temp Sensor error – unit cannot read the resistance of the sensor, check with Multi meter 30 DegF = 28,500Ω 40 DegF = 23,000Ω 50 DegF = 18,000Ω The higher the resistance the colder the temperature that the sensor thinks it is seeing

5 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 motor Check 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 condition Reprogram unit using Remote controller Outdoor unit Error – See specific error code on Outdoor unit

6 Outdoor Unit Error Codes YGRExplanation ○○⊙ 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

7 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 –

8 IPM Over Current Error / OC error (E464) OC signal Motor Current IPM OFF & Motor Stop OC Level Causes Indoor 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

9 Comp Starting Error (E461)– Compressor does not start, it has 15 seconds to start and will try 5 times to start

10 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.)

11 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

12 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

13 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

14 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

15 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

16 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)

17 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

18 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.

19 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

20 Outdoor Error Codes in detail Comp Rotation Error (E467) Compressor Motor Torque calculated from Pressure of discharge and suction Pd Ps

21 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

22 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 trouble Cause : Power line voltage changes quickly. Power line disconnect during compressor running. Lightning surge noise. Compressor liquid back. Compressor trouble. PCB trouble. Outdoor Error Codes in detail

23 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

24 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

25 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

26 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

27 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

28 Literature Available Sales 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 self diagnostic

29 Support Available Sales Support Local Representation Quietside sales staff Regionalized Customer Support Technical Support East Coast Denis, Mike, Chris West Coast John, Stu, Kevin Website :

30 Thanks for attending Any Questions??????????


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