Error 1200 (Recharge failed): reported across multiple models, at least three distinct causes

What the error means

Mammotion's app shows "Recharge failed (1200)" with the message "No infrared signal is detected. Please ensure the LED on charging station is green and the infrared modules on both charging station and the robot rear are clean" when the mower and its charging dock fail to complete their infrared docking handshake. Error 1200 does not appear in Mammotion's official product manuals; see the fault-codes reference for the codes that are officially documented.

Mammotion's technical support team has since written about it directly, in a September 2026 return-to-charge guide on its own subreddit. It ties 1200 to a mower that "spins in front of the charging station or repeatedly enters and exits the charging dock", and says to check the charging station and power adapter⁵. Its checklist for that case:

• The station sits on firm, level ground with at least 1 m (3.3 ft) of clear space in front, and it has not been moved. If it has, reset its position in the app.
• The charging contacts and pogo pins on both the mower and the station are free of debris and corrosion. Press the pogo pins gently: they should move freely and spring back.
• The infrared sensors on both the mower and the station are clean. On Android, a phone's camera shows whether four infrared lights are visible on each.
• A docking test: place the mower about 1 m (3.3 ft) in front of the station and press Home + Start to see whether it docks⁵.

The same guide separates two cases that look alike. A mower that charges when placed on the station by hand but fails the docking test points at positioning, infrared detection, station placement or docking alignment. A mower that docks but does not charge points at the station and adapter lights, the power connections and the charging contacts⁵.

Confirmed cases

Case 1: every dock check passed, and a replacement station seemed to fix it

A YUKA owner worked through every dock-side check and still couldn't dock. The station's green LED was on, and the IR LED was confirmed flickering using a phone camera (IR light isn't visible to the naked eye). All sensors were cleaned, several flat station locations were tried, the RTK was moved and the zones rebuilt, and all devices were power-cycled. The mower detects the IR LEDs but drifts to one side on approach and fails with 1200 after a few attempts¹. For the first two weeks the owner had no reply from Mammotion support. Later a Mammotion account asked a colleague to follow up and asked for a log the next time it happened, and the owner sent one¹. In May 2025, about eight months after the first post, the owner wrote that they had received a new charging station over the winter break and had tested it once successfully before putting the mower into winter pause. They could not yet say the fix was permanent, but it seemed so¹. Two other owners in the thread, one on a LUBA 2, report the same trouble; neither gives an outcome¹. So when every dock-side check passes, the station itself can still be the fault. Until then, the practical workaround is placing the mower on the dock yourself rather than relying on auto-return.

Case 2: the charging station's own light goes dark

A different root cause produces the identical error: the station itself fails, and its light goes out although the power supply is still on. One station's green LED went dark while it still charged the mower, and a YUKA 1500 that charged in the morning could not find its station after mowing, its owner saying his station had gone the same way as one with no lights left at all. Both were fixed by a replacement station^{2, 3}. So check that the station's LED is green before treating 1200 as a mower-side fault.

Case 3: charging station slightly unlevel, worse on wet grass

Repeated failed-docking attempts (backs toward the dock, the app announces charging is starting, then backs out and repeats) occurred on a LUBA Mini AWD LiDAR despite the dock appearing level by eye and the mower stopping only a few millimeters short of full contact. A spirit-level check found the dock was actually tilted; shimming it level (about 1 cm, ⅜ in, on one side) fixed docking reliably across repeated tests, including in wet grass, which had been making the slight tilt worse by letting the mower's wheels slip during the final approach⁴.

Additional corroboration for a defective-station cause (same failure mode as Case 2): two more owners, a LUBA 1 and a LUBA 2, hit 1200 with no fix from cleaning. One was resolved via warranty replacement of a station whose green LED had also gone dark³ (the same failure documented in more detail on the charging-station green-LED guide). A fourth unit, a YUKA 1500, charged fine in the morning but then couldn't find the station after mowing, also resolved via warranty station replacement².

If you're hitting this

1. Check the dock has power and its LED is green first. It's the most basic check, and the app's own message asks for it. A dark station light while the power supply is on is the faulty-station case Case 2 documents, and every other check below assumes the dock is live.
2. Clean both IR windows: the mower's rear-facing IR receiver and the dock's IR emitter, per the app's own instructions, before you assume either side is faulted.
3. Check the dock is actually level with a spirit level, not just by eye. A few millimeters of tilt was enough to cause repeated failures for one owner, especially on wet grass. Mammotion's own guide also asks for firm ground and at least 1 m (3.3 ft) clear in front.
4. Check that the pogo pins spring back. Then run Mammotion's docking test: mower about 1 m (3.3 ft) in front of the station, press Home + Start.
5. If the dock has confirmed power, is level, both IR windows are clean and the docking test still fails: you may be looking at a case like Case 1, where one owner's problem seemed to go after a replacement charging station. Until then, return the mower to the dock yourself after each cut. Contact Mammotion support, reference this error code, and send the log when they ask. See what to have ready before you contact support.