Hussein Al-Sayyed Posted April 10, 2022 Posted April 10, 2022 Hi All, I have been using the SPF 5000 ES Growatt Inverter for 4 months now and everything was working properly. Few days ago, the inverter displayed the 02 error code out of nowhere. The troubleshooting guide says that it is an over temperature. We let it calm for few hours then restarted but nothing changed. The surrounding environment temperature is between the operable temperatures. In addition to that, we asked a technician to check the inside of the inverter and the NTC cables as the guide says but everything was tight and in place. Any idea why this error code is still appearing knowing that everything is working properly and no hardware problems/failures are present? Quote
Pacific Zulu Posted July 9, 2022 Posted July 9, 2022 I have the exact same problem. Once growatt saw the serial number they said it's the motherboard. They sent me a new motherboard which was an updated design but it doesn't have a place for all the cables leave two cables with nowhere to plug in. I did try it but it didn't work , growatt will not get back to me to help rectify this situation . Did you fix your error 02? Quote
Hussein Al-Sayyed Posted July 12, 2022 Author Posted July 12, 2022 @Pacific Zulu Unfortunately, the problem still exists. After searching for approximately 10 days at that time, I saw that a firmware update may solve the problem, but someone said that it might break the functionality of the inverter if something goes wrong. Another said if it's working don't update. I got the newer firmware but I didn't do it. Around a month ago the error code disappeared the way it appeared, without any logical reason. This time, I found that the utility might sometimes have unbalanced phases and the inverter detects that unbalance and act upon it. It seems that the inverter have some kind of bug in the firmware that prevents it from reading the circumstances correctly. The problem did come again few days ago and nothing I can do to fix it yet. Pacific Zulu 1 Quote
Walaa Posted September 4, 2022 Posted September 4, 2022 Im having the same problem since 3 days it started beeping red warning light & code 002... i put the beeping off , but the fsult is slways apearing... & the weather conditions are 26 deg celcius so no heat or high temperature... Plz need an answer Quote
Bassam74 Posted September 10, 2022 Posted September 10, 2022 I have the same problem within my Growatt inverter 5000w es. It shows o2 failure code in its screen, means high temperature, but indeed the ambient temperature is approximately 26 degree celcius. Can any one help me please to solve this problem? Quote
Mahershaito Posted September 17, 2022 Posted September 17, 2022 Hi, did any one fix the growatt error 02 Quote
hoda Posted September 17, 2022 Posted September 17, 2022 We have the same issue; the solar system was installed just three months ago, and although we don't use it that much, it started producing this errors two days ago and don't know how to solve it Quote
Smith1991 Posted September 25, 2022 Posted September 25, 2022 Hi guys, I assume the error code 02 comes due to the following reason, The inverter is mounted outside of the house. - The moisture in the atmosphere could damage your temperature probe. Cooling fans suck cool air from the environment and blow toward the motherboard. Tiny water particles may corrode the circuit board and cause the said damage. Please let me know your thoughts. fadees 1 Quote
Coulomb Posted September 25, 2022 Posted September 25, 2022 (edited) 7 hours ago, Smith1991 said: I assume the error code 02 comes due to the following reason You didn't say what model your inverter is. If it's a Growatt, then I don't know, but I suspect it means the same as an Axpert fault code 02. Axpert fault code 02 means over-temperature. That could be because it's outside in the full sun for part of the day. That might cause components to dry out faster than normal. But if it's mounted in a case, that should not be an issue. Edit: Axperts are not suitable for mounting outside without an enclosure. I don't know if Growatts are different in that regard. Edited September 25, 2022 by Coulomb Quote
Mhdthegreat Posted October 16, 2022 Posted October 16, 2022 I just cleaned the dust from outside the inverter and the alarm stopped fadees 1 Quote
De Silva Posted October 16, 2022 Posted October 16, 2022 My Growatt 5000 ES is giving same problem after heavy rains continue sky for 3 days I got error code 2 It can’t be over temperature I kept it without working for over 12 hours Still I get the same error Please let me know how to rectify Quote
De Silva Posted October 16, 2022 Posted October 16, 2022 Growatt 500 ES inverter error code 2 i have the error issue can some one help how to rectify error code 2 this happened after heavy rains for 3 days inverter is working with the error code beeping Quote
Kumatage Posted October 26, 2022 Posted October 26, 2022 I got the same error 02 this morning. It had rained all night, this happend around 5am, so it cannot be overheating. still cant find a solution for this. Quote
NathanL Posted February 1, 2023 Posted February 1, 2023 Hi everyone. I know this thread is old, but hopefully this helps someone in the future. There are four NTC's (heat sensors) in the machine that I know of. One screwed to each of the two heatsinks on the mainboard, one under the main transformer on the mainboard & one screwed to the heatsink on the front of the solar controller. Normally what happens is the fans pull air up through the bottom of the inverter, and moisture & dirt builds up on the front of the boards, which leads to rusting of the tracks. Often under the plastic connectors. To test if your NTC's are working use a multimeter, unplug them & test the resistance between the two wires. It should be around 15k. If they are shorted or no connection, replace them. Where the three that are screwed to the heatsinks are attached to the boards, use a small flat screwdriver to pry the plastic connector up off the two pins on the board. Your problem normally sits there. It's easy enough to use the multimeter to test both sides of the track for continuity. If there is no continuity just bridge out the two points with a small wire. You will notice the the one I'm working on in the pic, indicated with the arrow, has an issue on the solar charger. Hope this helps. Quote
JamesDock Posted March 14, 2023 Posted March 14, 2023 Good day Regarding the NTC Sensors. I noticed that if I removed the NTC(Thermostat) Sensor from the MPPT Board (The half mother board you see when opening up the inverter) then it works perfectly fine. I'd assume that my sensor got somehow damaged due to rust. Problem is now I need to find this part cause now the inverter doesn't register it. So it's constantly blasting the fans but rather that then not having it running To avoid this situation: 1) Don't install inverter outside 2) Make sure no mist or cold morning air touches your inverter 3) Don't install near water sources (For instance mine is installed near my washing machine All these causes rust cause the fans blow all that water particles directly into the inverter causing damage. Quote
pigaro Posted March 19, 2023 Posted March 19, 2023 I too have the error 02 problem. I noticed that diode d4 on the mppt board is shorted. Does anyone know the abbreviation of the d4 diode? Or where to find the wiring diagram of the mppt board? Quote
Hussein Al-Sayyed Posted May 15, 2023 Author Posted May 15, 2023 Hi everyone. Almost a year later and mine was fixed (Actually few months back). I don't know exactly what "he" did (the one who fixed it), but thankfully it was fixed. I rarely open this website but here I am. After reading the latest replies and comments, and from my understanding of what "he" said, I can say it's due to moisture, dust, malfunctioning NTC cables or sensors, short in some places or rust. Mine was most affected by 2 things. first, it mounting position. Although it was in a "semi closed" area where curtains are placed but that was not enough. Second, the batteries position with respect to the inverter. My batteries was placed under it. This in not the best position since as you all know, the batteries produce some gases while functioning (assuming your using lead-acid batteries). These gases affect the board and/or the sensors over time. From his experience dealing with the "same" problem with many others, it was best to reverse the air flow so that the fans does not suck the gases into the inverter but rather drag the heat outside. Technically, I don't know how this might affect its functionality in the long term, but in my area where it is neither that hot during summer nor that cold during winter, "he" said that that was the best solution to solve my particular problem. IT SOLVED MINE AND ONLY MINE. Warning: This may endanger the inverter if not done by a professional who asses the conditions and environment surrounding the inverter. fadees 1 Quote
johsol Posted June 30, 2023 Posted June 30, 2023 On 2023/05/15 at 12:04 PM, Hussein Al-Sayyed said: Hi everyone. Almost a year later and mine was fixed (Actually few months back). I don't know exactly what "he" did (the one who fixed it), but thankfully it was fixed. I rarely open this website but here I am. After reading the latest replies and comments, and from my understanding of what "he" said, I can say it's due to moisture, dust, malfunctioning NTC cables or sensors, short in some places or rust. Mine was most affected by 2 things. first, it mounting position. Although it was in a "semi closed" area where curtains are placed but that was not enough. Second, the batteries position with respect to the inverter. My batteries was placed under it. This in not the best position since as you all know, the batteries produce some gases while functioning (assuming your using lead-acid batteries). These gases affect the board and/or the sensors over time. From his experience dealing with the "same" problem with many others, it was best to reverse the air flow so that the fans does not suck the gases into the inverter but rather drag the heat outside. Technically, I don't know how this might affect its functionality in the long term, but in my area where it is neither that hot during summer nor that cold during winter, "he" said that that was the best solution to solve my particular problem. IT SOLVED MINE AND ONLY MINE. Warning: This may endanger the inverter if not done by a professional who asses the conditions and environment surrounding the inverter. Hello Hussein, do your inverter still work in reverse flow? Quote
suniljay Posted September 7, 2023 Posted September 7, 2023 On 2022/09/17 at 1:19 PM, Mahershaito said: Hi, did any one fix the growatt error 02 We must contact Mr Jason Wang growatt engineer email. [email protected] [email protected] On 2023/03/14 at 11:39 PM, JamesDock said: Good day Regarding the NTC Sensors. I noticed that if I removed the NTC(Thermostat) Sensor from the MPPT Board (The half mother board you see when opening up the inverter) then it works perfectly fine. I'd assume that my sensor got somehow damaged due to rust. Problem is now I need to find this part cause now the inverter doesn't register it. So it's constantly blasting the fans but rather that then not having it running To avoid this situation: 1) Don't install inverter outside 2) Make sure no mist or cold morning air touches your inverter 3) Don't install near water sources (For instance mine is installed near my washing machine All these causes rust cause the fans blow all that water particles directly into the inverter causing damage. Thanks a lot Can you please show where the thermistor connection you removed. Can I use the inverter ignoring this 02 fault and red bleeping? PL help [email protected] Srilanka Quote
AlexSolar Posted March 29, 2024 Posted March 29, 2024 I blowed air in the inverter using a air pistol and passing under fans. It's solve my problem. I really thing that dust or something made the sensor fail. Problem solved. Quote
Fady Posted August 24, 2024 Posted August 24, 2024 Hello , I have an error 02 in Growatt SPF 5000es . The problem solved when I replaced the MPPT board . I would appreciate if some one can tell me what part in MPPT is defected . Quote
TaliaB Posted August 25, 2024 Posted August 25, 2024 11 hours ago, Fady said: Hello , I have an error 02 in Growatt SPF 5000es . The problem solved when I replaced the MPPT board . I would appreciate if some one can tell me what part in MPPT is defected . Read this post. Hi All, I have been using the SPF 5000 ES Growatt Inverter for 4 months now and everything was working properly. Few days ago, the inverter displayed the 02 error code out of nowhere. The troubleshooting guide says that it is an over temperature. We let it calm for few hours then restarted but nothing changed. The surrounding environment temperature is between the operable temperatures. In addition to that, we asked a technician to check the inside of the inverter and the NTC cables as the guide says but everything was tight and in place. Any idea why this error code is still appearing knowing that everything is working properly and no hardware problems/failures are present? https://powerforum.co.za/topic/12060-growatt-spf-5000-es-error-code-02/?do=findComment&comment=119770 Quote
AlexSolar Posted December 6, 2024 Posted December 6, 2024 Hi Guy, This is my new experience. Last Weekend a fresh new inverter SPF5000ES (3 days past unboxing), gave me an ERROR 02 ! The inverter just after startup displays more than 80°C of temperature. It's visible from the inverter display. The problem occured during night (no sun) and without any load (everybody sleeping). In the morning, I blast the inverter with my air compressor. Nothing changed. Then, I tested all 3 accessibles NTC's (heat sensors)using my voltmeter as indicated by @NathanL, in this post, thank to you guy ! But unfortunately, everything seems correct (between 13 - 15 Khoms)... Finally, I disconnected and started sensors one by one and switched on the inverter with the sensors disconnected to check if it gave me the wrong temperature (I checked on the inverter display using the down arrow) each time. On the last try I identified that when unplugging the sensor on the left heatsinks on the mainboard, the temperature indicate -25°C. So I replaced this sensor by picking up one on an old Inverter SPF5000ES broken and tested it ... and done ! It's work ! So, my experience is that testing the only value of the Khoms of the sensor is not the only thing to include. In my case, the sensor was faulty, but his resistor was correct. So, I did not test it with a lighter to check if values change, but if you have capacity to replace the old sensor, do it one per one ! Hope it will help somebody ! Take care guys ! Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.