Mitsubishi Electric CITY MULTI P1016V-E Specifications Page 105
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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–104–
(4) Troubleshooting the major components of the BC controller
1) Pressure sensor
Pressure sensor troubleshooting flow
Check on the LED monitor dis-
play.
• TH2 or LPS of outdoor unit.
• HPS of outdoor unit
• PS1, PS3 of BC controller and
confirm the following relationship
HPS > PS1
PS3 > TH2 or LPS
(puressure calculated value)
Check that refrigerant pip-
ing and transmission line
connections are in agree-
ment between outdoor
unit and BC controller.
START
Check pressure sensor, PS1,
PS3, connectors for discon-
nection, looseness, or incor-
rect attachment.
OK?
Stop the unit (compres-
sor OFF).
At least
10 minutes passed since
stopping?
Check PS1, PS3 on LED
monitor display and confirm
that none of the detected
pressure values is below
1kg/cm
2
G (0.098MPa).
OK?
OK?
OK?
OK?
Change board.
Repair faulty connection.
Change pres-
sure sensor.
OK?
Replace the wrong
puressure sensor by the
correct pressure sensor,
and confirm detected pres-
sure is indicated correctly.
Short connectors 2 and 3 on the
board and check the pressure.
Pressure
range within 0 to 1kg/cm
2
G
(0.098MPa)
Pressure
of at least 32kg/cm
2
G
(3.14MPa) indicated?
Remove the pressure sensor
connector from the board, and
check the pressure.
Check for the faulty connec-
tor on applicable pressure
sensor.
Correct refrigerant
piping and trans-
mission line.
OK?
OK?
Note 3
Take corrective action.
HPS PS1 PS3 TH2
or LPS (pressure calcu-
lated value) (The differ-
ence is less than
1kg/
cm
2
G (0.098MPa)
No board or pressure
sensor abnormality.
Check that refrigerant piping and
transmission line connections are
in agreement between outdoor
unit and BC controller.
Confirm the
following relationship PS1
PS3?
Correct refrigerant
piping and the trans-
mission line.
Unit running?
Note 1
No
Note 2
No
No
Note 2
No
No
No
Yes
No
Yes
Yes
Yes
Ye s
Yes
Ye s
Yes
No
Note 4
No
No
No
Ye s
Ye s
Ye s
No
No
Yes
- Service Handbook 1
- Contents 2
- Safety precautions 3
- [2] Piping Machining 6
- [4] Brazing 8
- [5] Airtightness Test 9
- [6] Vacuuming 9
- [7] Charging of Refrigerant 10
- [8] Dryer 10
- 2 COMPONENT OF EQUIPMENT 11
- • PURY-P200·250YMF-C 12
- PURY-YMF-C PURY-P-YMF-C 12
- Controller Box 13
- MAIN board 14
- • PUHY / PURY 14
- INV board 15
- FANCON board 16
- G/A board 16
- BC controller 17
- RELAY 10 board 18
- RELAY 4 board 18
- 1PUHY-200YMF-C, 250YMF-C 19
- 2PUY-200YMF-C, 250YMF-C 20
- 3PUHY-P200YMF-C, P250YMF-C 21
- 4PUY-P200YMF-C, 250YMF-C 22
- 5PURY-200YMF-C, 250YMF-C 23
- 6PURY-P200YMF-C, P250YMF-C 24
- DC reactor 25
- <Symbol explanation> 26
- 3 CMB-P104V-E 27
- 4 CMB-P105V-E 28
- 5 CMB-P106V-E 29
- 20 22V 220 240V 32
- [4] Standard Operation Data 34
- Pressure 35
- (1) Outdoor unit 42
- 1 PU(H)Y-200·250YMF-C 42
- 2 PUHY-P200·250YMF-C 43
- 3 PURY-200·250YMF-C 44
- 4 PURY-P200·250YMF-C 45
- Cooling capacity saving 46
- Model Circuit board used 47
- 3 TEST RUN 48
- Insulation pipe 49
- CENTRALLY CONTROLLED 51
- [2] Test Run Method 52
- (1) Switch function 53
- Group setting mode 55
- ERROR CODE 56
- OA UNIT ADDRESS NO 56
- (Alternative 57
- 5 CONTROL 59
- [2] Control of BC Controller 64
- [3] Operation Flow Chart 65
- (2) BC controller (for PURY) 66
- Normal operations 66
- Trouble observed 66
- (3) Indoor unit 67
- (4) Cooling operation 68
- Test run 68
- (5) Heating operation 69
- Defrosting operations 69
- (6) Dry operation 70
- Thermostat ON 70
- 0/100=3460 73
- PS3 73
- Caution : 79
- In case of PUHY-200, 250YMF-C 79
- Caution: (PUHY-P200·250YMF-C) 80
- In case of PURY-200, 250YMF-C 82
- Adjustment starts 83
- Adjustment completed 83
- 7 TROUBLESHOOTING 85
- 12345678 87
- SV4SV3SV2SV1 87
- Caution: 90
- In case no MELANS used 95
- HL = 2.0V or more 98
- BN = 1.3V or less 98
- 1/L1 3/L2 5/L3 103
- 2/T1 4/T2 6/T3 103
- 1) Pressure sensor 105
- 2) Temperature Sensor 107
- 2345678910 108
- 2 Solenoid Valve 112
- TH15 TH11 TH12 116
- Pilot type 117
- Direct drive type 117
- Solenoid valve 117
- (1) Mechanical 120
- (2) Communication/system 134
- (3) System error 141
- [4] LED Monitor Display 143
- 1 PU(H)Y-(P)200·250YMF-C 144
- 2 PURY-(P)200·250YMF-C 153
- 12345678910 163
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