Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting
Liquid chillers with scroll compressors and comfortlink controls
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Also See for AquaSnap 30MPA Series:
- User manual (16 pages) ,
- Operation and service manual (80 pages) ,
- Installation instructions manual (20 pages)
Table of Contents
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Controls, Start-Up, Operation,
Service, and Troubleshooting
CONTENTS
Safety Considerations. . . . . . . . . . . . . . . . . . . . .2,3
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Conventions Used In This Manual . . . . . . . . . . . . . . . . 3
Basic Controls Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Main Base Board (Mbb) . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Aux Board (Aux) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Energy Management Module (Emm) . . . . . . . . . . . . . . 7
Current Sensor Board (Csb) . . . . . . . . . . . . . . . . . . . . . 7
Expansion Valve (Exv) Board . . . . . . . . . . . . . . . . . . . . 7
Enable/Off/Remote Control Switch . . . . . . . . . . . . . . . 7
Emergency On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . 7
Board Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control Module Communication . . . . . . . . . . . . . . . . . 7
Carrier Comfort Network
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
• COOLER LEAVING FLUID SENSOR
• COOLER ENTERING FLUID SENSOR
• CONDENSER LEAVING FLUID SENSOR
• CONDENSER ENTERING FLUID SENSOR
• COMPRESSOR RETURN GAS
TEMPERATURE SENSOR
• OUTDOOR-AIR TEMPERATURE SENSOR
• DUAL LEAVING WATER TEMPERATURE SENSOR
• DISCHARGE TEMPERATURE THERMISTOR
• SPACE TEMPERATURE SENSOR
Energy Management Module . . . . . . . . . . . . . . . . . . . . 16
Loss-Of-Cooler Flow Protection . . . . . . . . . . . . . . . . . 16
Condenser Flow Protection . . . . . . . . . . . . . . . . . . . . . 16
Thermostatic Expansion Valves (Txv) . . . . . . . . . . 16
Electronic Expansion Valves (Exv) . . . . . . . . . . . . . 17
Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
• MINUTES LEFT FOR START
• MINUTES OFF TIME
• CAPACITY CONTROL OVERRIDES
Time, Day, And Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Cooling Set Point Select . . . . . . . . . . . . . . . . . . . . . . . . 25
Ice Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cooler Pump Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alarm Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cooler Pump Sequence Of Operation . . . . . . . . . . . 27
Condenser Pump/Condenser Fan Output
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Temperature Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
• DEMAND LIMIT (2-Stage Switch Controlled)
• EXTERNALLY POWERED DEMAND LIMIT
(4 to 20 mA Controlled)
• DEMAND LIMIT (CCN Loadshed Controlled)
Cooling Set Point (4 To 20 Ma) . . . . . . . . . . . . . . . . . . 34
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53300170-01
Page
Interface . . . . . . . . . . . . . 13
®
Printed in U.S.A.
Liquid Chillers with Scroll Compressors
and ComfortLink Controls
Digital Scroll Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Pre-Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36,37
System Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Start-Up And Operation. . . . . . . . . . . . . . . . . 37-40
Actual Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Check Refrigerant Charge. . . . . . . . . . . . . . . . . . . . . . . 38
Check Compressor Oil Level . . . . . . . . . . . . . . . . . . . . 39
Adjust Oil Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Operating Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
• TEMPERATURES
• VOLTAGE — ALL UNITS
OPERATION SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . 40
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-52
Service Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Electronic Components . . . . . . . . . . . . . . . . . . . . . . . . . 41
• CONTROL COMPONENTS
Electronic Expansion Valve (EXV). . . . . . . . . . . . . . . 41
Exv Troubleshooting Procedure . . . . . . . . . . . . . . . . 42
Compressor Replacement . . . . . . . . . . . . . . . . . . . . . . 44
30Mp Cooler And 30Mpw Condenser . . . . . . . . . . . 44
• BRAZED-PLATE COOLER AND CONDENSER
HEAT EXCHANGER REPLACEMENT
• BRAZED-PLATE COOLER AND CONDENSER
HEAT EXCHANGER CLEANING
Water Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Oil Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Check Refrigerant Feed Components . . . . . . . . . . . 45
• FILTER DRIER
• MOISTURE-LIQUID INDICATOR
• THERMOSTATIC EXPANSION VALVE (TXV)
• MINIMUM LOAD VALVE
• PRESSURE RELIEF DEVICES
Check Unit Safeties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Chilled Water Flow Switch . . . . . . . . . . . . . . . . . . . . . . 47
Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Replacing Defective Modules . . . . . . . . . . . . . . . . . . . 52
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Recommended Maintenance Schedule . . . . . . . . . . 52
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . 52-71
Complete Unit Stoppage And Restart. . . . . . . . . . . . 52
• GENERAL POWER FAILURE
• UNIT ENABLE-OFF-REMOTE CONTROL SWITCH
IS OFF
• CHILLED FLUID PROOF-OF-FLOW SWITCH OPEN
• OPEN 24-V CONTROL CIRCUIT BREAKER(S)
• COOLING LOAD SATISFIED
• THERMISTOR FAILURE
• ENABLING AND DISABLING COMPRESSORS
• COMPRESSOR DISCHARGE CHECK VALVE
• LOW SATURATED SUCTION
• COMPRESSOR SAFETIES
Form 30MP-4T
AquaSnap
30MPA,MPW015-071
Pg 1
8-17
Replaces: 30MP-3T
®
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Table of Contents
Troubleshooting
Need help?
Do you have a question about the AquaSnap 30MPA Series and is the answer not in the manual?
Questions and answers
How to set strainer countdown after finish clean the strainer
To set the strainer countdown after cleaning the strainer on a Carrier AquaSnap 30MPA Series, enter "YES" for the parameter STRN→S.T.MN (Strainer Maint. Done). This action resets the strainer service countdown.
This answer is automatically generated
@Mr. Anderson
@Mr. Anderson thank you for your replay, so I'm already follow your instructions but the light stills blinking maybe need to resetting for next strainers maintenance. So how to set it ?
Anybody know how to stop LED alarm T302 blinking after finish reset ST.D.M
To stop the LED alarm T302 from blinking on a Carrier AquaSnap 30MPA Series after resetting ST.D.M (Strainer Maintenance Done), follow these steps:
1. Set ST.D.M (Run Status→PM) to YES to indicate that strainer maintenance has been completed.
2. Ensure the date and time are correctly set (Month, Day, Year).
3. Reset the alert.
Once these steps are completed, the T302 alarm should stop blinking.
This answer is automatically generated
@Mr. Anderson all correct and still blinking, even I reset from alarm RCRN and ST.D.M but same