Midea UR-BC93CM-ST Series Wall Mounted DC Inverter Air Conditioner Instruction Manual

Service Manual, 2016-12
Service Manual

UR-BC93CM-ST Series Wall Mounted DC Inverter Air Conditioner

(The picture is only for reference, and specific appearance and configuration are subject to the real product)

SVC: Zhang Kun
Approved by| R&D: Tang Tao
SVC: Guang Taoshuai

Warning

Important Safety Notice
The Maintenance Manual is only for the use of maintenance personnel with certain experience and background in electrical, electronic and mechanical field.
Any attempt to repair main devices may lead to personal injury and property loss.
Manufacturers or distributors are not responsible for the content of the Manual and interpretation thereof.
Midea Refrigerators
Technical Maintenance Manual
Copyright @2016
All rights reserved. Replication of all or part of the Manual in any forms shall not be allowed without written approval by the Overseas Sales Corporation of Midea Refrigerators.

Safety Warning Code

1.1Warning for operation safety
Important Safety Instructions

CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
This symbol indicates that dangerous voltage constituting a risk of electric shock s present ‘within your freezer.
This symbol indicates that there are important ‘operating and maintenance instructions in the literature accompanying your freezer.

WARNING

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this appliance near water.
6. Clean only with a damp cloth.
7. Do not block any ventilation openings.
8. Install in accordance with the manufacturer’s instructions.
9. Do not install near any heat sources, such as radiators, heat registers, stoves. or other abparatus that produce heat.
10. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
11. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the appliance.
12. Do not attempt to modify or extend the power cord of this appliance.
13. Unplug this appliance during lightning storms or when it will not be used for long periods of time.
14. Make sure that the available AC power matches the voltage requirements of this appliance.
15. Do not handle the plug with wet hands. This could result in an electric shock.
16. Unplug the power cord by holding the plug, never by pulling the cord.
17.  Do not turn the appliance on or off by plugging or unplugging the power cord.
18. Refer all servicing to qualified service personnel. Servicing is required when the appliance has been damaged in any way, such as the power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the appliance, the appliance has been exposed to rain or moisture, does not operate normally, or has been dropped.
19.  To reduce the risk of fire or electric shock, do not expose this appliance to rain, moisture, dripping, or splashing, and no objects filled with liquids should be placed on top of it.
20.  Do not use extension cords or ungrounded (two prong) adapters.
21.  This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision orinstruction concerning use of the appliance by a person responsible for their safety.
22. Children should be supervised to ensure that they do not play with the appliance.
23.  If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or similarly qualified person, in order to avoid a hazard.
24.  Take off the doors and leave the shelves in place so that children may not easily climb inside.

WARNING
Electric Shock Hazard
Failure to follow these instructions can result in electric shock, fire, or death.

1. WARNING- Keep ventilation openings, in both the freezer and the built-in structure, clear of obstruction.

2. WARNING- Do not touch the interior of the freezer with wet hands.
   This could result in frost bite.

3. WARNING- Do not use mechanical devices or other means to accelerate the defrosting process, other than those recommended by the manufacturer.

4. WARNING- Do not damage the refrigerant circuit.

5.   WARNING-Do not damage the refrigerant tubing when handling, moving, or using the freezer.

6. WARNING- DANGER—Never allow children to play with, operate, or crawl inside the freezer.
   Risk of child entrapment. Before you throw away your old freezer:

1. Take off the doors
2. Leave the shelves in place so that children may not easily climb inside

7. Unplug the freezer before carrying out user maintenance on it.
8. This freezer can be used by children age eight years and older and persons with reduced physical or mental capabilities or lack of experience and knowledge if they are given supervision or instruction concerning the use of the freezer in a safe way and understand the hazards involved. Children should not play with the freezer. Cleaning and maintenance should not be performed by children without supervision.
   5 WARNING-Do not damage the refrigerant tubing when handling, moving, or using the freezer.
   6 WARNING-DANGER—Never allow children to play with, operate, or crawl inside the freezer.
   Risk of child entrapment. Before you throw away your old freezer:

1. Take off the doors
2. Leave the shelves in place so that children may not easily climb inside
   Unplug the freezer before carrying out user maintenance on it.
   8 This freezer can be used by children age eight years and older and persons with reduced physical or mental capabilities or lack of experience and knowledge if they are given supervision or instruction concerning the use of the freezer in a safe way and understand the hazards involved. Children should not play with the freezer. Cleaning and maintenance should not be performed by children without supervision.

9.  If acomponent part is damaged, it must be replaced by the manufacturer, its service agent, or similar qualified persons in order to avoid a hazard.
10. Please dispose of the freezer according to local regulations as the freezer contains flammable gas and refrigerant.
11. Follow local regulations regardin? disposal of the freezer due to flammable refrigerant and gas. All refrigeration products contain refrigerants, which under the guidelines of federal law must be removed before disposal. It is the consumer’s responsibility to comply with federal and local regulations when disposing of this product.
12. This freezer is intended to be used in household and similar environments.
13. Do not store or use gasoline or any flammable liquids inside or in the vicinity of this freezer.
14. Do not use extension cords or ungrounded (two-prong) adapters with this freezer. If the power cord is too short, have a qualified electrician install an outlet near the freezer. Use of an extension cord can negatively affect the freezer’s performance.

Grounding requirement
This freezer must be grounded. This freezer is equipped with a cord having a grounding wire with a grounding plug. The plug must be inserted into an outlet that is properly installed and grounded. Improper use of the grounding plug can result in a risk of  lectric shock. Consult a qualified electrician or service person if the grounding instructions are not completely understood, or if doubt exists as to whether the freezer is properly grounded.
1.2Safety instruction for refrigerant
WARNING  Explosion Hazard.
Keep flammable materials and vapors, such as gasoline, away from freezer. Failure to do so can result in fire, explosion, or death.
DANGER—Risk of Fire or Explosion. Flammable Refrigerant Used. To Be Repaired Only By Trained Service Personnel. Do Not Use Mechanical Devices, Do Not Puncture Refrigerant Tubing.
CAUTION—Risk of Fire or Explosion. Flammable Refrigerant Used. Consult Repair Manual/Owner’s Guide Before Attempting To Service This Product. All Safety Precautions Must be Followed.
CAUTION—Risk of Fire or Explosion. Dispose of Properly In Accordance With Federal Or Local Regulations. Flammable Refrigerant Used.
CAUTION—Risk of Fire or Explosion Due To Puncture Of Refrigerant Tubing; Follow Handli:P Instructions Carefully.
Flammable Refrigerant Used.

Description for product features

This product is provided with following features:

(The picture is only for reference, and specific appearance and configuration are subject to the real product)
1)Mechanical temperature controlManual defroststeel wire guardrailChange the door opening direction

Installation and commissioning

3.1 Handling

1. Protecttherefrigeratorinmovingit Sameasshownasleftphoto,pleasemoveitbyhandcartwi thcushion
2. Removeallpackingmaterialsandbottomcushion,then moveintohouseforplacement
3.  After moving it to appropriate location,wait for 2hours be for epoweron.

3.2Disassembly (None)
The refrigerator door needs to be dismantled if it cannot enter the room in the whole.
3.3 Installation location
Location that is easy for ventilation shall be chosen to facilitate heat dissipation, enhance its performance and reduce the energy consumption.

3.4 Leveling of the refrigerator
If the refrigerator cannot be placed steadily, adjust the footing to level it.

3.5Change the door opening direction

1. Remove the plastic covering from the top door hinge.| ****

---|---
2) Unscrew the two screws from the bottom bracket. Remove the foot from opposite side.|

3. Place to one side.|
4. Slide the Appliance door down about 15cm and off the top hinge pin and lift away from the Appliance.|

5. Remove the two screws from top bracket and replace on the otherside. You will need to first remove the plastic caps from the other side.|

6. Slide the Appliance door back on to the Top hinge, making sure its the right way up. Screw the bottom hinge into place on the new side. Replace the other foot on the other side. Replace the plastic covering by clicking back into position on the door hinge.|

7. Check that the door is aligned horizontally and vertically and that the seals are closed on all sides before finally tightening the bottom hinge.
   Re-adjust the levelling feet.|

3.6 Installation of handle(None)
3.7 Installation of door lock(None)
3.8 Adjustment to level the door(None)
3.9 Adjustment to shelves(None) 

Terms

4.1 Definition of model(None)
4.2Location of nameplate 

(The picture is only for reference, and specific appearance and configuration are subject to the real product)

Product specification

5.1 Typespecification(None)
5.2 Electrical parameters 

Product Name| CE-BC93C

M-AQ

| CE-BC93C

M-ST

| UR-BC93A-

S

| UR-BC93A-

S

| CE-BC93C

M-ST

| SR-BC93C

M-UT

---|---|---|---|---|---|---

Product Code

| ****

22031010

000982

| ****

2203101000

0245/

92031010Z0

0008/

92031010Z0

0010

| 2203101000

0482/

92031010Z0

0004/

92031010Z0

0005/

92031010Z0

0006

| ****

22031010

000561

| ****

22031010

000242

| ****

22031010

000243

Name| Item| Type| Specificati

on

| Specificati

on

| Specificati

on

| Specificati

on

| Specificati

on

| Specificati

on

Compressor

| Compressor| /| AZ70CY1| SZ55C1J| FZ40C1J-U| FZ40C1J-U| SZ55C1J| SZ45C1J-N

Starter

| ****

PTC

| TY-QZ-002

/QPE2-A15 MD3

| 8EA19C1/

QP2-15/Q P2-15

| ****

QP2-4R7

| ****

QP2-4R7

| 8EA19C1/

QP2-15/Q P2-15

| 8EA19C1/Q P2-15/QP2

-15

Overload protector

| ****

OLP

| 3TM104NF

1/ DRB15N61

A2

| ****

3TM117TF

2/DRB12T

61A1

| ****

DRB20T61 A1

| ****

DRB20T61 A1

| ****

3TM117TF

2/DRB12T

61A1

| ****

3TM129TF2

/DRB13T61 A1

Capacitor| /| /| /| /| /| /| /

Winding resistance of compressor wiring terminal

| ****

| Rmc:2.5-1 4.5Ω Rsc:7.4-2 1.4Ω Rms=Rmc+ Rsc| Rmc:40.25 ±7%Ω Rsc:15.89 ±7%Ω Rms=Rmc+R sc| Rmc:2.5- 14.5Ω Rsc:7.4-2 1.4Ω

Rms=Rmc+

Rsc

| Rmc:2.5-1 4.5Ω Rsc:7.4-2 1.4Ω

Rms=Rmc+

Rsc

| Rmc:40.25

±7%Ω

Rsc:15.89

±7%Ω

Rms=Rmc+R sc

| Rmc:34.24

±7%Ω

Rsc:16.53

±7%Ω

Rms=Rmc+R sc

Motor

| Fan motor of the freezing chamber| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

Ventilation door of the refrigeratin g chamber| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

Condensatio| /| /| /| /| /| /| /
| n fan| | | | | | |
---|---|---|---|---|---|---|---|---

Lights

inside the refrigerator

| Lights

inside the freezing chamber

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

Lights

inside the refrigeratin g chamber

| ****

/

| ****

Incandesce nt lamp

| ****

Incandesce nt lamp

| ****

None

| ****

Incandesce nt lamp

| ****

None

| ****

None

Switch of the

refrigerator

door

| ****

/

| ****

sector

| ****

sector

| ****

None

| ****

sector

| ****

None

| ****

None

Product Name| CE-BC93C

M-ST

| CE-BC93C

M-ST

| /| /| /| /
Product Code| 22031010

001261

| 22031010

001381

| /| /| /| /
Name| Item| Type| Specificati

on

| Specificati

on

| Specificati

on

| Specificati

on

| Specificati

on

| Specificati

on

Compressor

| Compressor| /| B60CBL| B60CBL| /| /| /| /
Starter| PTC| QP2-15A| QP2-15A| /| /| /| /
Overload

protector

| OLP| DRB135P6

1A2

| DRB135P6

1A2

| /| /| /| /
Capacitor| /| /| /| /| /| /| /

Winding

resistance of compressor wiring

terminal

| ****

| Rmc:47.0

±7%Ω

Rsc:23.5

±7%Ω

Rms=Rmc+ Rsc

| Rmc:47.0

±7%Ω

Rsc:23.5

±7%Ω

Rms=Rmc+R sc

| ****

/

| ****

/

| ****

/

| ****

/

Motor

| Fan motor of the

freezing

chamber

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

Ventilation door of the refrigeratin

g chamber

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

Condensati

on fan

| /| /| /| /| /| /| /
Lights

inside the refrigerator

| Lights

inside the freezing

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| ****

/

| chamber| | | | | | |
---|---|---|---|---|---|---|---|---
Lights

inside the refrigeratin g chamber

| ****

/

| ****

Incandesce nt lamp

| ****

None

| ****

/

| ****

/

| ****

/

| ****

/

Switch of the

refrigerator

door

| ****

/

| ****

sector

| ****

None

| ****

/

| ****

/

| ****

/

| ****

/

5.3Refrigerating temperature
Temperature tolerance ≤ 3° C

5.4Defrosting parts(None)

**Defrosting period| Initial defrosting period| Normal defrosting period
---|---|---
/| /
Defrosting sensor| /| /
Defrosting temperature controller| /| /
Thermal fuse| /| /
Defrosting heater in freezing chamber**| /| /

5.5Circuit diagram

BC93_22031010000982_22031010000245_22031010000561_22031010001261_92031010Z000 08_92031010Z00010

Internal view and dimension

6.1Main parts and their names

(The picture is only for reference, and specific appearance and configuration are subject to the real product)

Refrigerator chamber

1.F door
2.Tray
3.Temp control assembly
4.Glass shelf| 5.fruits and vegetables box
6.Steel wire guardrail

6.2External dimension

(The picture is only for reference, and specific appearance and configuration are subject to the real product)

Refrigerating piping system and circulating route of cooling air

7.1 Refrigerating piping system

(The picture is only for reference, and specific appearance and configuration are subject to the real product)
7.2Circulating route of cooling air(None)

Dismantling of parts

8.1 Parts on the door

Door seal

Door seal is installed into door liner groove. 1） Open the refrigerator door;
2） Take the door seal ①out of door liner;|

Door tray| None
Guardrail
1）  Grab the Guardrail and squeeze it sideways
2）  Pull out and remove from the refrigerator|

8.2 Parts inside the refrigerator

Shelves

1）Lift up the division plate with a proper force and pull it out towards yourself;|

Drawer| None

8.3 Light system

Light

The light at the left of refrigerator chamber| | ****

`

1、Remove the light cover 2、Remove the bulb
Light switch
There is a light switch on the side wall of the refrigerating chamber.
Loosen the hook with small normal screwdriver and pull out the switch until the wire connector reveals.|

Pilot light| None
Fresh light| None

8.4Air duct components refrigeratingchamber

8.5Air duct components in freezing chamber and fan motor

8.6Evaporator and temperature sensing system

Evaporator in freezing chamber|

---|---
Components on the evaporator
Defrost thermostat

Fuse

| None
---|---
Defrost sensor| None
Defrost heater| None
Evaporator in refrigerating chamber| None
Components on the evaporator| None
Sensor
Sensor in freezing chamber| None
Sensor in refrigerating chamber| None
Sensor in Variable temperature chamber| None
ambient temperature senser| None
Thermostat
Without light
1.       Remove the screw on the thermostat assembly
2.       Remove the thermostat knob
3.       Remove the thermostat
4.       Remove    the    connector    and   replace    the thermostat.| ****

Have a light
1.Remove the screw on the thermostat assembly 2.Loosen the thermostat knob and fastening screw, and remove the thermostat box assembly 3.Remove    the connector    and    replace     the thermostat.| ****

8.6Compressor case
Piping system in the compressor case

1.condenser 2.process pipe 3.suction pipe| 4.dry filter 5capillary
Starter and protector of the compressor
**1. Remove the screws** 1） Two screws outside 2） One screw inside|

**2.   Remove the clipping strip
** Slowly pull it out|

**3.   Remove the protective cover
** 1）Pry the protective cover slowly from the upper part, 2）Pull it out and remove it.

|

**4.   Remove the starter and protector
** Unplug the starter and protector (you can use a screwdriver to pry it slowly)|

---|---
5.   The reverse process can complete installation.| /

8.7Display and main control panel(None)

8.8 Bar counter(None)

8.9 Water dispenser(None)

8.10 Ice maker(None)

Function and operation

9.1Operation panel
Direct cooling mechanical refrigerator, through the thermostat knob to adjust the stalls.

9.2Temperature control
Turn the temperature control knob to MAX, the internal temperature of the refrigerator becomes lower.
Turn the temperature control knob to MIN, the internal temperature of the refrigerator becomes higher.
NOTE:Please adjusting and using between “MAX”and”MIN”
9.3Give an alarm(None)
9.4Failure code and solutions(None)
9.5Defrost function
Manual defrost
9.6Compressor fan control(None)
9.7Self-diagnosis (None)

Circuit description

10.1 Power Supply(None)
10.2 Test circuit for door switch(None)
10.3 Temperature test circuit(None)
10.4Freezer chamber fan motor circuit (None)
10.5refrigerating chamber fan motor circuit (None)
10.6Condensation fan circuit (None)
10.5 Fan motor circuit of the ventilation door(None)
10.6Resistance value of the sensor (R/T) (None) 

Troubleshooting Method

11.1 Not cooling

11.2 Not working of compressor

11.3 -Thermostat malfunction-Undercooling

11.4 Light is not on

11.5 Noise

Figures and details of repair

parts(Documents are provided separately)
12.1Figures
12.2List of parts and components

Appendix:

13.1Electrical Schematic Diagram(None)
（Model：*）
13.2Refrigerator maintenance tooling and equipment and material
Tooling**

| screw assemble and disassemble
**** 2| slotted screwdriver/scraper|

| screw and rivet assemble and disassemble
3| Socket spanner 5/16″|

| hinge and compressor screw assemble and disassemble
4| **** Sucker|

| display panel and air duct cover disassemble
5| **** Allen wrench（2.8~4mm）|

| **** handle assemble and disassemble

**** 6

| **** Vise grip pliers|

| sealing process tube
---|---|---|---
7| **** Pipe cutter|

| pipe cutting
8| **** Knife|

| assistive tool
9| **** Nipper pliers|

| assistive tool
10| **** Capillary tube scissors|

| **** Shear capillary

Equipment

| vacuum pumping
2| **** Electronic scale|

| weighing refrigerant/gas
---|---|---|---
3| **** High pressure nitrogen with piezometer|

| pipe and cooling system(condenser, evaporator, etc) impurities clean
4| **** Soldering gun|

| heating and welding
5| **** Quick coupling|

| connection process pipelinevacuumorchargerefriger antwillbeused.
6| **** hand leak detector|

| **** welding point leakage detect, if no, use soap-suds

material

| Chargetherefrigerant
2| **** Dry filter|

| Involving a system failure to be replaced
---|---|---|---
3| Copper welding rod|

| tube welding
4| **** Refrigerant/gas|

| Add refrigerant to the system
5| **** Sealing tape|

| **** door fixing for reversible door option

Midea Refrigerators
If you need to get detailed technical information from the manufacturer, please contact:
xxx@midea.com
Refrigeration Division
Overseas Sales Company
Address: No. 176, Jinxiu Avenue, Economic-Technological Development Area, Hefei, Anhui,
China

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