Question about Mitsubishi Mr. Slim MXZ30TN Air Conditioner

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After replacing circuit board in Mr Slim model MSH17TN, unit won't respond to remote (it displays as if communicating but no beep. Unit works using Emerg op switch. What's wrong?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 6 Answers

SOURCE: no heating from Mr slim

P8 refers to outdoor protection device activation usually caused by low gas charge or blocked condenser coil. any good a/c company can resolve this for you. however please note that if it is gas related a pressure test must be carried out to determine where that potential leak may be and that can be very costly.

regards

Ed

Posted on Nov 14, 2007

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  • 958 Answers

SOURCE: Mitsubishi Mr. Slim Mini Split MS-A12WA Indoor Unit

no sir gary,

the water would not go to the drain pan if you install it vertically.

water would just drop anywhere and would ruin a lot of things...
'

tnx 4 using fixya,

drcool

Posted on Sep 13, 2008

  • 8 Answers

SOURCE: Mr Slim air unit is blowing out dirt into my room.

Simple matter of cleaning the unit. You have to clean the filters, the coil and around the louver.

Posted on Jun 10, 2009

  • 340 Answers

SOURCE: mr. slim air conditioner does not cool.

maybe just a cleaning

Posted on Jun 19, 2009

  • 587 Answers

SOURCE: compressor won't switch on, have tried reset

If you have any experience in working with electrical systems, you can, but if not you should call a service technician.
First being very careful, check to make sure contactor is engaging.
Then check to see if you have the same voltage across all three wires on the compressor side of the contactor, assuming this is 230 volts, check T1 to T2 should have 230 volts, then check T2 to T3 should have 230 volts then check T1 to T3 should have 230 volts. If you have 230 volts to all 3 wires then the compressor is bad probably an open winding and needs replaced. Before replacing the compressor you need to check the resistance (with an ohmmeter) between all 3 terminals at the compressor. In order to do this you need to disconnect all power to the unit and ohm the compressor terminals from T1 to T2, T2 to T3 and T1 to T3 they should all have the same resistance if they do then the windings are good and the compressor is locked up, if one of the the windings is different then the windings are bad, either way the compressor needs replaced.

Posted on Nov 10, 2009

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Signal transmitting/receiving
error
(Indoor controller does not
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1 Answer

What is the code p3 at Mr Slim thermostat


Signal transmission error (Remote control does not respond to indoor unit)

Causes:
Bad contact of transmission wire
Signal transmitting/receiving circuit is abnormal
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1 Answer

Mr.slim thermostat flashin and display p3


Signal transmission error (Remote control does not respond to indoor unit)

Causes:
Bad contact of transmission wire
Signal transmitting/receiving circuit is abnormal
Wrong operation due to noise interference by another appliance

Mitsubishi recommend replacing the transmission cables, the controller or the indoor board. Had the same problem myself one, I ran new temporary transmission cables. The unit ran no bother. Swapped the transmission cables for the original and the fault disappeared.

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