Hello Fellow Yuneec Pilot!
Join our free Yuneec community and remove this annoying banner!
Sign up

WARNING

Joined
Jan 11, 2018
Messages
4
Reaction score
0
Location
Long Beach, California
I have a Typhoon H and everytime I start it up and give it power to lift, I get a warning "Motor error! Enter Five rotor mode! Please land immediately". At different times the white rotor stops and sometime the black one. And other time none stop but I get the same message. What are my options. It's only been in the air 4 times.
 
I have a Typhoon H and everytime I start it up and give it power to lift, I get a warning "Motor error! Enter Five rotor mode! Please land immediately". At different times the white rotor stops and sometime the black one. And other time none stop but I get the same message. What are my options. It's only been in the air 4 times.

Are the props the ones that came with your Typhoon H? I've not heard of having white and black props unless they are after market props.

I would also advise to double check that the props are secure and that the center button on each one is fully up. Keep us posted.
 
I have a Yuneec H480 that I bought a few years ago very cheaply because it got into 5 motor mode occasionally. I tried replacing the motors not working but with limited success.
Recently I opened the drone thinking I would replace the mother board and see if this fixes the issue. During disassembly I found, so far, three dry solder joints on the red/blue/black power feed to the engines. Two on the mother board (blue wires) and one on one the male contact on a wire from the motor (I don't remember the color). The interesting thing is that the multi strand wires look absolutely "dry" with almost no traces of solder.
I have fixed the solder joints and when the battery is charged I will do a test flight again :) . If I get a new five motor fault again I will re-do all motor power connections. A power feed problem is very easy to feel by rotating the motor. If one or more power feed is disconnected the motor turns extremely smoothly. When the power connectors work the motor works as a generator and turning it one feels the breaking force from the windings.
Notice that fault finding as such is fun so even if I haven't done much flying with this specific drone the fault finding has been interesting. I have mostly flown Q500 and like it very much.

After the long intro above a question:
Has anybody else seen similar "dry" solder joints? I have a feeling that the reason for the problem could be that the previous owner possibly stored the Drone in a cold shed during a few winters. We are talking about Finland and a possible storage temperature of -30 deg C (-22 F) or below for a few months. Today's solder is essentially pure Tin which means that in cold temperatures below 13 deg C (55 F) the Tin structure changes from metallic to non conducting powder. Combined with vibrations this could explain the observed "dry" solder joints?
Has somebody else seen a similar problem possibly related to low storage temperature?

Test flight:
The test flight result was slightly mixed. I hovered for perhaps 10 minutes without any problem. Starting moving the drone more aggressively caused 5 rotor mode but landing without problems. After re-starting the drone I wasn't able to reproduce the error. My feeling is that I have one or more additional similar problems where I higher power load triggers 5 motor mode possibly because additional solder points are marginal for the power required. Probably it is a good idea to re-do all the motor connections ... when I get enough red/blue/black heat shrink tubes :) .
 
Last edited:
So far it has been three different motors :) the last one very obvious. My next step will be to first re-solder every single power feed to the motors simply because some have been detached. Solder joints have to be checked both for the male and female connectors and the soldering of the female lead to the motherboard. My assumption is that if I have found three obvious solder spots that are bad then the probability that there are more is very high. The fastest and simplest option is to re-solder.
 
  • Like
Reactions: Steve Carr
I run a test using the TyphoonHGUI. My initial problem was to find a Windows computer, I run Linux. I found an old laptop with windows 7 that worked. Has anybody been able to run the TyphoonGUI under Wine ;) ? The program reported the ESC as OK. Testing the different motors resulting in all working but the left hand front motor (when looking from the back towards the front) has a clearly different sound than the other motors. Doing a test flight a few days ago, see this thread, caused a 5-motor fault. Looking at the flight log I found the motor status going from 255 (OK I guess) to 254 which I guess is motor number one which I assume is the front left hand side motor with the different sound. The relevant line in the log is I think shown below. The motor status stayed 254 until landing and switch off.

[td]
20250204 10:46:58:954​
[/td]​
[td]
-33​
[/td]​
[td]
16.0​
[/td]​
[td]
0.0​
[/td]​
[td]
1.48​
[/td]​
[td]
60.122215​
[/td]​
[td]
24.729546​
[/td]​
[td]
0.1029563​
[/td]​
[td]
true​
[/td]​
[td]
0​
[/td]​
[td]
18​
[/td]​
[td]
-1.11​
[/td]​
[td]
338.89​
[/td]​
[td]
-4.87​
[/td]​
[td]
255​
[/td]​
[td]
225​
[/td]​
[td]
85​
[/td]​
[td]
3​
[/td]​
[td]
1​
[/td]​
[td]
5​
[/td]​
[td]
0​
[/td]​
[td]
0.55​
[/td]​
[td]
20250204 10:46:59:047​
[/td]​
[td]
-31​
[/td]​
[td]
16.0​
[/td]​
[td]
0.0​
[/td]​
[td]
1.48​
[/td]​
[td]
60.122215​
[/td]​
[td]
24.729546​
[/td]​
[td]
0.1029563​
[/td]​
[td]
true​
[/td]​
[td]
0​
[/td]​
[td]
18​
[/td]​
[td]
-3.34​
[/td]​
[td]
340.51​
[/td]​
[td]
-4.64​
[/td]​
[td]
254​
[/td]​
[td]
225​
[/td]​
[td]
85​
[/td]​
[td]
3​
[/td]​
[td]
1​
[/td]​
[td]
5​
[/td]​
[td]
0​
[/td]​
[td]
0.55​
[/td]​

[td]
[/td]​
[td width="14.8515%"]
[/td]​
[td]
[/td]
[td]
[/td]
[td]
[/td]
[td]
[/td]
[td width="4.5%"]
[/td]
[td]
[/td]
[td]
[/td]​
[td]
[/td]
[td]
[/td]​
[td]
[/td]
[td]
[/td]
[td]
[/td]​
[td]
[/td]
[td]
[/td]
[td width="3.8961%"]
[/td]
[td width="3.8961%"]
[/td]
[td width="4.5228%"]
[/td]
[td width="4.5224%"]
[/td]
[td width="4.4774%"]
[/td]​
[td width="4.4778%"]
[/td]​
[td]
[/td]​
[td width="14.8515%"]
[/td]​
[td]
[/td]
[td]
[/td]
[td]
[/td]
[td]
[/td]
[td width="4.5%"]
[/td]
[td]
[/td]
[td]
[/td]​
[td]
[/td]
[td]
[/td]​
[td]
[/td]
[td]
[/td]
[td]
[/td]​
[td]
[/td]
[td]
[/td]
[td width="3.8961%"]
[/td]
[td width="3.8961%"]
[/td]
[td width="4.5228%"]
[/td]
[td width="4.5224%"]
[/td]
[td width="4.4774%"]
[/td]​
[td width="4.4778%"]
[/td]​
After switch of I restarted the drone and the motor status was 255 and simple hovering didn't cause the error. My feeling is that the motor status and different motor sound points towards a marginal motor that fails when the power is increased.

My guess is that the best option is to replace the motor. I plan to order two motors to have one spare. I plan, of course, to order NEW motors not preowned. Are there possibilities to mix up the motors between different Typhoon H versions? My version is, I think a Typhoon H480 where the measured distance between diagonal motors is 480 mm.

As can be seen from the log I live fairly far north (60.12 deg N). The temperature was roughly 0 deg C that is roughly freezing.
Thanks for the help!
 
Are there possibilities to mix up the motors between different Typhoon H versions
Just make sure you order a motor for the H480 and it will be fine. The A and B motors are identical. Only the prop mount is different and it can be changed to either A or B.

Most motor problems I have seen are the result of something magnetic stuck to the magnet inside the motor. Those magnets are very strong and it is difficult to remove anything that has stuck to them.
 
  • Like
Reactions: WTFDproject

New Posts

Members online

Forum statistics

Threads
21,253
Messages
244,870
Members
28,104
Latest member
wslseo01