Max Oil Filter Differential Pressure Failure

Alarm 87 — Circuit A (P.70)

Alarm 88 — Circuit B (P.71)

Criteria for Trip — The criterion is tested when the compres- sor has been operating for at least 5 seconds. The alarm is generated if the difference between the Circuit Discharge Pres- sure and the Compressor Oil Pressure is greater than 50 psi (345 kPa) for more than 30 seconds.

Action to be Taken — The affected compressor will be turned off.

Reset Method — Manual

Possible Causes — If this condition is encountered, check the following items:

•check the discharge and oil sensor wiring to the Main Base Board and CPM board

•boards for a faulty channel

•faulty transducer

•plugged oil filter

•faulty oil solenoid valve coil

•stuck oil solenoid valve

•stuck check valve

•manual shut off valve to ensure it is not fully open

Check the power supply to the System Manager and unit controls.

High Oil Filter Pressure Drop

Alarm 90 — Circuit A (P.84)

Alarm 91 — Circuit B (P.85)

Criteria for Trip — The criterion is tested when the compres- sor has been operating for at least 5 seconds. The alarm is gen- erated if the difference between the Circuit Discharge Pressure and the Compressor Oil Pressure is greater than 30 psi for more than 5 minutes.

Action to be Taken — The compressor will continue to run.

Reset Method — Manual

Possible Causes — If this condition is encountered, check the following items:

•discharge and oil sensor wiring to the Main Base Board and CPM board

•boards for a faulty channel

•faulty transducer

•plugged oil filter

•faulty oil solenoid valve coil

•stuck oil solenoid valve

•stuck check valve

•manual shut off valve to ensure it is not fully open

Check the power supply to the System Manager and unit controls.

Low Oil Level Failure

Alarm 93 — Circuit A (P.75)

Alarm 94 — Circuit B (P.76)

Criteria for Trip — The criteria are tested whether the com- pressor is on or off. The alarm is generated if:

•The compressor is not running and an increase in capacity is required and the compressor is not started.

•The compressor is running and the oil level switch is open for more than 45 seconds.

Action to be Taken — The affected compressor will be turned off.

Reset Method — Automatic, when the oil level is elevated, first three times the alarm is tripped in a 24-hour period. Man- ual if alarm is tripped more than three times in a 24-hour period.

Possible Causes — If this condition is encountered, check the following items:

•oil level in the oil separator

•oil level switch wiring to the CPM board

•CPM board for a faulty channel

•faulty oil level switch

•oil solenoid valve stuck open

Alarm 96 — Master Chiller Configuration Error (MC.nn)

Criteria for Trip — The criterion is tested whether the unit is ON or OFF. The units must be configured as a Master and Slave machine (Master/Slave Select, MSSL=1 and Master/ Slave Select, MSSL=2), and one of the following configura- tion errors has been found. The “nn” refers to the error code listed in Table 50.

Action to be Taken — Unit not allowed to start in Master Slave control.

Reset Method — Automatic

Possible Causes — If this condition is encountered, check the following:

•CCN wiring.

•Control power to each Main Base Board, master and slave.

•Move to first position.

•Confirm unit configuration.

Alarm 97 — Initial Factory Configuration Required (FC.n0)

Criteria for Trip — The criterion is tested whether the unit is ON or OFF. The alarm will be generated if the Unit Capacity Model, TONS=0.

Action to be Taken — The unit is not allowed to start.

Reset Method — Automatic after factory configuration is com- plete. The configuration must be manually completed.

Possible Causes — If this condition is encountered, confirm the unit configuration.

Alarm 98 — Illegal Configuration (FC.nn)

Criteria for Trip — The criterion is tested whether the unit is ON or OFF. The alarm will be generated if the one of the following configuration errors is detected by the control. The “nn” refers to the error code listed in Table 51.

Action to be Taken — The unit is not allowed to start.

Reset Method — Automatic after reconfiguration is completed. Possible Causes — If this condition is encountered, confirm the unit configuration (None, UNIT).

Alarm 99 — Unit is in Emergency Stop (P.31)

Criteria for Trip — The criterion is tested whether the units are ON or OFF and when the machine receives a Carrier Comfort Network® (CCN) command for an Emergency Stop.

Action to be Taken — Unit will stop, or will not allowed to start.

Reset Method — Automatic, once a return to normal command is received.

Possible Causes — If this condition is encountered, check for CCN Emergency Stop command.

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Carrier 30XW150-400 specifications Reset Method Automatic
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30XW150-400 specifications

The Carrier 30XW150-400 series is a line of water-cooled chillers that exemplifies innovation, efficiency, and reliability in commercial cooling solutions. Designed for medium to large-scale applications, this series is ideal for a variety of settings, including commercial buildings, industrial processes, and chilled water systems.

One of the standout features of the Carrier 30XW series is its efficiency. The chillers utilize advanced variable-speed compressor technology, which allows the units to adapt to varying cooling loads while minimizing energy consumption. This technology not only reduces operational costs but also contributes to better environmental sustainability by lowering greenhouse gas emissions.

The 30XW series chillers are equipped with high-efficiency, scroll compressors that operate quietly and provide significant energy savings. By utilizing enhanced economizer controls, these units can achieve higher efficiency ratings, especially in part-load conditions. The result is an impressive Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER), making these units a smart choice for energy-conscious businesses.

In terms of reliability, the Carrier 30XW150-400 series features robust construction and an array of safety and monitoring systems. The units come with advanced diagnostics that help in quickly identifying and addressing any operational issues. This proactive approach ensures reliability and minimizes downtime, which is crucial for maintaining optimal temperature controls in critical environments.

Additionally, the chillers incorporate environmentally friendly refrigerants that comply with the latest regulations, making them a sustainable choice for modern commercial applications. Their compact design allows for flexible installation options, and the integrated control systems provide the ability to optimize performance based on specific building management demands.

User-friendly interfaces and remote monitoring capabilities further enhance the ease of operation, allowing facility managers to have real-time insight into performance metrics and system health. This level of control contributes to better maintenance planning and maximizes the lifespan of the equipment.

In summary, the Carrier 30XW150-400 series of water-cooled chillers combines advanced technology, energy efficiency, and reliable performance, making it an ideal solution for various commercial and industrial cooling needs. With its commitment to innovation and sustainability, Carrier continues to set the standard in the HVAC industry.
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