Carrier MMY-MAP0724FT9UL Service Manual page 3

7-3. Applied Control Using Optional Board for Outdoor Unit ............................................... 70
7-3-1. Power peak-cut Control (Standard): TCB-PCDM4UL ........................................................ 71
7-3-2. Power peak-cut Control (Extended) : TCB-PCDM4UL ...................................................... 72
7-3-3. Snowfall Fan Control : TCB-PCMO4UL .............................................................................. 73
7-3-4. External master ON/OFF Control : TCB-PCMO4UL .......................................................... 73
7-3-5. Night operation (sound reduction) Control : TCB-PCMO4UL .......................................... 74
7-3-6. Operation Mode Selection Control : TCB-PCMO4UL ........................................................ 75
7-3-7. Error/Operation Output : TCB-PCIN4UL ............................................................................ 76
7-3-8. Compressor Operation Output : TCB-PCIN4UL ................................................................ 77
7-3-9. Operating Rate Output : TCB-PCIN4UL ............................................................................. 78
8. TEST OPERATION ................................................................................................. 79
8-1. Procedure and Summary of Test Operation .................................................................... 79
8-2. Check Items before Test Operation (before poweringon) .............................................. 80
8-3. Check at Main Power-on .................................................................................................... 85
8-4. Address Setup .................................................................................................................... 86
8-4-1. Precautions .......................................................................................................................... 86
8-4-2. Address Setup and Check Procedure ............................................................................... 86
8-4-3. Address Setup Procedure ................................................................................................... 87
8-4-4. Check after Address Setup when Central Control System Is Connected .................... 100
8-4-5. Setting when connecting multiple indoor units to a FS (Flow Selector) unit .............. 101
8-4-6. How to set up the cooling only indoor unit ..................................................................... 102
8-5. Troubleshooting in Test Operation ................................................................................. 103
8-5-1. A Check Code Is Displayed on the Remote Controller .................................................. 103
8-5-2. Operation from the indoor remote controller is not accepted, and a check code is
displayed on the 7-segment display of the interface PC board of the header unit. .... 104
8-5-3. There is no display of a check code on the 7-segment display on the interface PC
board of the header unit, although there is indoor unit that is not accepting operation
from the indoor remote controller. ................................................................................... 104
8-5-4. In checking the number of connected outdoor units and connected indoor units after
address setup, a lower number of connected units is displayed.
(There are outdoor/indoor units that do not operate in a test operation.) ................... 105
8-6. Test Operation Check ...................................................................................................... 107
8-6-1. Fan Check ........................................................................................................................... 107
8-6-2. Cooling/heating test operation check .............................................................................. 108
8-7. Confirmation of Test Operation ...................................................................................... 112
8-7-1. Function to Start/Stop (ON/OFF) Indoor Unit from Outdoor Unit ................................. 112
8-7-2. Error Clearing Function .................................................................................................... 118
8-7-3. Remote Controller Distinction Function.......................................................................... 120
8-7-4. Pulse Motor Valve (PMV) Forced Open/Close Function in Indoor Unit ........................ 121
8-7-6. Solenoid Valve Forced Open/Close Function in Outdoor Unit ...................................... 122
8-7-7. Fan Operation Check in Outdoor Unit ............................................................................. 123
8-7-8. Abnormal Outdoor Unit Discrimination Method By Fan Operating Function .............. 124
8-7-9. Manual Adjustment Function of Outside Temperature (TO) Sensor ............................. 125
8-7-10. Monitor Function of Remote Controller Switch ........................................................... 127
9. TROUBLESHOOTING .......................................................................................... 129
9-1. Overview ........................................................................................................................... 129
9-2. Troubleshooting Method ................................................................................................. 130
9-3. Troubleshooting Based on Information Displayed on Remote Controller ................. 135
9-4. Check Codes Displayed on Remote Controller and SMMS-i Outdoor Unit
(7-Segment Display on I/F Board) and Locations to Be Checked ............................... 139
9-5. Diagnosis procedure for each check code .................................................................... 154
9-6. 7-Segment Display Function ........................................................................................... 184
9-7. Oil Level Judgment Display ............................................................................................ 190
9-8. Leakage/Clogging of Refrigerating Cycle Circuit ......................................................... 194
9-8-1. Flow Selector Unit (FS Unit) ............................................................................................. 198
9-8-2. Troubleshooting when Multiple Indoor Units are Connected to Cool/Heat FS Unit .... 201
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