Haier 1U18BR4EAA User manual

SERVICE MANUAL
Wall Mounted Type
ON/OFF
1U18BR4EAAModel No.
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
Repair the product or products dealt with in this service information by anyone else could result in serious injury or death
WARNING
2017 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group Version V1 Date 2017-03-07
HSU-18HUN103/R2

Contents
Domestic air conditioner
Contents
1. Introduction ............................................................................................1
2. Specifications.........................................................................................7
3. Piping diagrams .....................................................................................9
4. Operation range....................................................................................10
6. Dimensional drawings...........................................................................
7. Center of gravity ...................................................................................
8. Service Diagnosis ...............................................................................
5. Circuit diagrams ..................................................................................
13
12
12
11
9. Perfomance Curves Diagram................................................................ 18

Introduction
Domestic air conditioner
1 Introduction
1.1 Model name explanation
1 U 1 8 E R 4 E AA
The maximum combination number
Type of outdoor unit : U (normal type)
Nominal cooling capacity (18000BTU/h)
Platform of outdoor units:E Platform
District
Version number
Heat pump & R410A refrigerant
AC
Apply toT1; 220~240V50HZ/1ph
1


  
  
           
              
                    
                  
   
  
          
          
     
           
           
        
                  
           
   

                
 
               
                   
       
                
    
               
       
                
          
                
     
             
               
   
                
                

2


  

                 
   
                 

                 


                 
         
                    
              

              
                

     

                  
                
        
              
     
                
       
             
               
 


 
               
            


 
3


  

                 
      
  
              
                
                 
 
        
               

        
               
    
       
                
            
                 
             
 
                  
         
                  
                

                 
  

                  
   
          
4


  

               
     
                
              
                   
            
   

                     
  
               
               
             

                  
            
5


  

                  
            
      
               
       
               
   
                  
  
      
            
               
  
                    
  
   
    
                      
 
           
       

         
            

            
         
 
6

Specification
Domestic air conditioner
2 Specifications
NOMINAL DISTRIBUTION SYSTEM VOLTAGE
1/esahP
05zHycneuqerF
032VegatloV
NOMINAL CAPACITY and NOMINAL INPUT
gnitaehgnilooc
Capacity rated KW 5.2 5.3
0908105771h/utB
Power Consumption(Rated) KW
61
.
3
.213
W/WPOC/REE
h/³mlavomeRerutsioM 2.0*10
TECHNICAL SPECIFICATIONS-UNIT
Dimensions H*W*D mm 780×245×640
Packaged
Dimensions H*W*D mm 920×351×720
7.14GK/thgieW
45GK/thgiewssorG
Sound level 55BderusseepdnuoS
ELECTRICAL SPECIFICATIONS
A
tnerrucgninnurlanimoN
Maximum running current A
TECHNICAL SPECIFICATIONS-PARTS
gnitaehgnilooc
Compressor
rosserpmoCyratoRepyT
ASH201SV-C8LUledoM
0651WtuptuorotoM
Oil type 68HES-H or equivalent
58.1LemulovegrahcliO
Fan
naflaixAepyT
03WtuptuorotoM
7.13h/³m)hgih(etarwolfriA
860mpr)wol/hgih(deepS
Heat
exchanger
Type ML fin- 7HI-HX tube
23.1*28*2hctif*egats*woR
7
-3
Platform of indoor units G NZGNZ
gnitaehgnilooc
Platform of indoor units G NZGNZ
1.620 1.470
7.2
9.7
6.5
8.3
7
9.7
1.460
7
9.7
6.4
8.9
6.4
8.9
1.610 1.610 1.460
3.23 3.633.23 3.63

Specification
Domestic air conditioner
TECHNICAL SPECIFICATIONS-OTHERS
Refrigerant
circuit
Refrigerant type R410a
Refrigerant charge KG 1.35
Maximum allowable distance
between indoor an outdoor m 25
Maximum allowable level difference m 5
Refrigerant control Capillary
Piping connections
(external diameter)
liquid mm 6.35
gas mm 12.7
drain mm 16
Heat insulation type Both liquid and Gas pipes
Max. piping Length m 25
Max. Level Difference m 5
Chargeless m 7
Amount of Additional Charge of Refrigerant g/m 20
Note: the data are based on the conditions shown in the table below
htgnelgnipiPgnitaehgnilooc
Indoor: 27 DB/19 WB
Outdoor: 35 DB/24 WB
Indoor:20 DB
Outdoor: 7 DB/6 WB 7m
Conversation formulae
Kcal/h= KW×860
Btu/h= KW×3414
cfm=m³/min×35.3
8
International Protection degree IP 24

Piping diagrams
Domestic air conditioner
3 Piping diagrams
9



 


Domestic air conditioner
5. Circuit Diagram
TO INDOOR UNIT
3
1(L) 2(N)
B
W
M
S
B
M
R
C
BBL
@
R
W
BL
@
B
@
4
W
M
B
BR
@@
W(orBorBR)
0010560078
@
OUTDOOR DIAGRAM
COMPRESSOR
RED
BLACK
YELLOW/GREEN
BROWN
WHITE
BL:BLUE
FAN MOTOR
2.There are no dotted lines on cool only type.(marked
with @),Wire is connected from 4 (marked with
@@)on terminal block to 1.
TO INDOOR
FRESH AIR
MOTOR
4-way
valve
CAPACITOR
CAPACITOR
1.See above for wiring of heat pump type.
NOTE:
1
FRESH AIR
MOTOR
3.Some of cool only type terminal block only
have 1 2 and but no the parts .
4.The parts are optional.
2
Y/G
3
2
3
1
Circuit Diagram
11

Dimensinal drawings
Domestic air conditioner
6.Dimensional drawings
7.Center of gravity
12
780 245
780
780
245
12.7
unit:mm
unit:mm

Service diagnosis
Domestic air conditioner
8 Service Diagnosis
8.1 Caution for Diagnosis
The operation lamp flashes when any of the following errors is detected.
1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions,
disabling equipment operation.
2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the
diagnostic procedure described in the following pages.
8.2 Parameter of primary electronic appliance
13
erutciPretemaraPemaNON
1 Compressor
Rated voltage:220-240V
Rated current:7.7A
Rated frequency:50 Hz
Resistance:2.06
2 Fan motor
Rated voltage:220-230V
Rated current:0.35A
Rated frequency:50 Hz
:3
3 4-way valve
Rated voltage:
Rated current:0. 1A
Rated frequency:50 Hz
: K
220-240V
/60
2.085
0
Rated inductance
ResistanceRated

Service diagnosis
Domestic air conditioner
8.3 Problem Symptoms and Measures
Symptom Check Item Details of Measure
None of the units
operates
Check the power supply. Check to make sure that the rated voltage is supplied.
Check the indoor PCB Check to make sure that the indoor PCB is broken
Operation
sometimes stops. Check the power supply. A power failure of 2 to 10 cycles can stop air conditioner operation.
Equipment
operates but
does not cool, or
does not heat
(only for heat
pump)
Check for faulty operation
of the electronic
expansion valve.
Set the units to cooling operation, and compare the
temperatures of the liquid side connection pipes of the
connection section among rooms to check the opening and
closing operation of the electronic expansion valves of the
individual units.
Diagnosis by service port
pressure and operating
current.
Check for insufficient gas.
Large operating
noise and
vibrations Check the installation condition.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.) are
provided.
14

Domestic air conditioner
8.4Codes and Description
8.4.1.Problem Symptoms and Measures
Symptom Check Item Details of Measure
None of the units
operates
Check the power supply.
Check to make sure that the rated voltage is
supplied.
Check the indoor PCB Check to make sure that the indoor PCB is broken
Equipment
operates but does
not cool, or does
not heat (only for
heat pump)
Diagnosis by service
port pressure and
operating current. Check for insufficient gas.
Large operating
noise and
vibrations
Check the installation
condition.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.) are
provided.
8.4.2 Error Codes and Description indoor display
Code indication
Description Reference
Page
indoor
Indoor Malfunction
E1 Room temperature sensor failure 19
91eruliafrosnesegnahcxe-taeH2E
02rorreMORPEEroodnI4E
12noitcnuflamrotomnafroodnI41E
The code indication that is listed above is the main fault
Troubleshooting
Caution Be sure to turn off power switch before connect or disconnect connector, or else parts damage
may be occurred.
8.4.2.1 Thermistor or Related Abnormality
Indoor Display E1: Room temperature sensor failure
E2: Heat-exchange sensor failure
Method of The temperatures detected by the thermistors are used to determine thermistor errors
Malfunction
Detection
Malfunction when the thermistor input is more than 4.92V or less than 0.08V during compressor
.noitareponoisiceD
Conditions
Note: The values vary slightly in some models
Supposed
Faulty connector connection
Causes
Faulty thermistor
Faulty PCB
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector,
Seivice diagnosis
15
Method of
Malfunction
Detection
Malfunction
noisiceD
Conditions
Supposed
Method of
Malfunction
Detection
Malfunction
Detection
Conditions
Supposed
Causes
Troubleshooting or else parts damage may be occurred.

Domestic air conditioner
Thermistor resistance check method:
Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester.
The relationship between normal temperature and resistance is shown in the value of indoor thermistor.
8.4.2.2 EEPROM abnormal
Indoor Display E4: indoor EEPROM error
Method of The Data detected by the EEPROM are used to determine MCU
Malfunction
Malfunction when the data of EEPROM is error or the EEPROM is damaged
Decision
Supposed Faulty EEPROM data
Causes Faulty EEPROM
Faulty PCB
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Thermistor resistance check
Is it normal?
Yes
No
Yes
Is it normal? No
Check the connector connection.
Replace the thermistor
Replace the indoor unit PCB
Correct the connection
Replace the indoor or outdoor mainboard
Seivice diagnosis
16
Method of
Malfunction
Detection
Malfunction
noisiceD
Conditions
Supposed
Causes
Method of
Malfunction
Detection
Malfunction
Detection
Conditions
Supposed
Causes
Troubleshooting
Yes
Yes

Domestic air conditioner
8.4.2.3 Indoor DC fan motor malfunction
Indoor Display E14
Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine
Malfunction abnormal fan motor operation
Detection
When the detected rotation feedback signal don’t received in 2 minutes
Decision
Conditions
Operation halt due to breaking of wire inside the fan motor.
Causes
Fan motor overheat protection
Operation halt due to breaking of the fan motor lead wires
Detection error due to faulty indoor unit PCB
Troubleshooting * Caution Be sure to turn off power switch before connect or disconnect connector,
or else parts damage may be occurred.
Check whether terminals
on indoor
p
cb is well?
Electrify the machine again and turn it on in the cooling operation,
Measure voltage between the positions 1and 3 of Terminal CN5 on
the indoor PCB
the voltage is about 90-220vac
check whether motor can run
when turn on the unit
the indoor motor is damaged and need replace
Yes
No
No
Yes
Measure whether there is voltage pulse(0-5VDC)
between the positions middle wire and black wire
o
f
T
ermina
l
CN
2
o
n
th
e
indoo
r
P
C
B
No
the indoor pcb is damaged and need replace
Pull out the terminals on the indoor
mainboard and reinsert them.
No
Yes
Is it ok?
Yes
Service diagnosis
17
Method of
Malfunction
Detection
Malfunction
noisiceD
Conditions
Supposed
Method of
Malfunction
Detection
Malfunction
Detection
Conditions
Supposed
Causes
Troubleshooting
Yes
Yes

Performance Curves Diagram
Domestic air conditioner
9 Performance Curves Diagram
9.1 Cooling capacity-temperature curves
18