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Rotenso · Rotenso Imoto wall-mounted inverter split · Troubleshooting

Rotenso Imoto does not start or cools poorly – what to check before calling service

Summary (editorial)

The manual's troubleshooting table lists simple checks: power switch, remote control battery, dirty filter, temperature setting.

✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.

From the manufacturer's documentation (English source wording, with page)

  1. Unit will not start – possible causes: power failure, the main power tripped, loose connections, faulty transformer (table read from page image)[1]
  2. The temperature on the display board cannot be set – possible causes: the remote control is powered off, broken remote control (table read from page image)[2]
  3. Unit is on but the wind is not cold (hot) – possible causes: setting temperature higher/lower than the room's, ambient temperature too high/low, fan mode (table read from page image)[3]
  4. Unit runs continuously but insufficient cooling (heating) – possible causes: dirty air filter, dirty condenser fins, setting temperature, ambient temperature, SILENCE function activated (table read from page image)[4]
  5. The unit starts up and stops frequently – possible causes: voltage too high or too low, ambient temperature too high/low, frosting and defrosting frequently (table read from page image)[5]
  6. Close the power switch[6]
  7. Replace the battery of the remote control[7]
  8. Clean or replace dirty air filter[8]
  9. Adjust the setting temperature[9]
  10. Fan mode – adjust to cool mode[10]
  11. Turn off SILENCE function[11]
  12. Ambient temperature too high/low – turn the AC later[12]
  13. Compressor functions are delayed for up to three minutes upon subsequent unit restarts[13]
  14. If strange sounds or smoke is detected from the unit, turn the breaker off and disconnect the power supply cable[14]
  15. Do not touch the metal parts of the unit when removing the air filter as they are very sharp[15]
  16. Do not use harsh detergents, solvents, or similar items to clean the unit. Use a soft cloth for cleaning[16]
  17. If a gas leak is suspected, immediately turn off the gas and ventilate the area before turning the unit on[17]

⚠ Work on refrigerant circuits, mains electricity and PV DC wiring is for qualified technicians only.

The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →

Sources

Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.

  1. [1] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified unit will not start
  2. [2] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified the temperature on the display board cannot be set
  3. [3] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified unit is on but the wind is not cold(hot)
  4. [4] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified unit runs continuously but insufficient cooling(heating)
  5. [5] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified the unit starts up and stops frequently
  6. [6] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified close the power switch
  7. [7] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified replace the battery of the remote control
  8. [8] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified clean or replace dirty air filter
  9. [9] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified adjust the setting temperature
  10. [10] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified adjust to cool mode
  11. [11] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified turn off silence function.
  12. [12] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 142 manufacturer document – copy from a distributor quote verified turn the ac later
  13. [13] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 26 manufacturer document – copy from a distributor quote verified are delayed for up to three minutes upon subsequent unit restarts.
  14. [14] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 7 manufacturer document – copy from a distributor quote verified if strange sounds or smoke is detected from the unit,
  15. [15] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 7 manufacturer document – copy from a distributor quote verified removing the air filter as they are very sharp.
  16. [16] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 7 manufacturer document – copy from a distributor quote verified do not use harsh detergents, solvents, or similar items
  17. [17] Rotenso Imoto Series – IDU & ODU Units Service Manual (I21Xi, I26X, I35X, I50X, I70X), EN , p. 7 manufacturer document – copy from a distributor quote verified if a gas leak is suspected, immediately turn off the