generated if the one of the following configuration errors is detected by the control. The “nn” refers to the error code listed in Table 52.

Table 52 — Service Maintenance Alert Codes

CODE

DESCRIPTION

Sr.01

Circuit A Loss of Refrigerant Charge

Sr.02

Circuit B Loss of Refrigerant Charge

Sr.04

Water Loop Size Warning

Sr.05

Air Exchanger Cleanliness Warning

Sr.06

Cooler Pump 1 Servicing Required

Sr.07

Cooler Pump 2 Servicing Required

Sr.08

Condenser Pump 1 Servicing Required

Sr.09

Condenser Pump 2 Servicing Required

Sr.10

Water Filter Servicing Required

Sr.11

Compressor A Oil Filter Servicing Required

Sr.12

Compressor B Oil Filter Servicing Required

Action to be Taken — None.

Reset Method — Manual, after the service has been completed.

Possible Causes — If the Sr-01, 02, or 03 conditions are encountered, check the following items:

sensor wiring to the Main Base Board

sensor for accuracy

Compressor Motor Temperature Too High

Alarm 132-01 — Circuit A (A1.01)

Alarm 133-01 — Circuit B (B1.01)

Criteria for Trip — The alarm criteria are checked when the compressor is ON. This alarm will be generated if:

The temperature is greater than 245 F (118 C) and it has been greater than 212 F (100 C) for 10 consecutive seconds.

The compressor temperature is greater than 232 F (111 C) for 90 seconds (but less than 250 F [120 C]).

Action to be Taken — The circuit shuts down immediately.

Reset Method — Manual

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

faulty wiring and loose plugs

faulty CPM board

Compressor Motor Temperature Out of Range

Alarm 132-02 — Circuit A (A1.02)

Alarm 133-02 — Circuit B (B1.02)

Criteria for Trip — The alarm criterion is checked when the compressor is ON. This alarm will be generated if: the temper- ature is greater than 245 F (118 C) and it has NOT been greater than 212 F (100 C) for 10 consecutive seconds.

Action to be Taken — The compressor will be stopped.

Reset Method — Manual

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

faulty compressor temperature thermistor

faulty wiring and loose plugs

faulty CPM board

Compressor High Pressure Switch Protection

Alarm 132-03 — Circuit A (A1.03)

Alarm 133-03 — Circuit B (B1.03)

Criteria for Trip — The alarm criterion is checked when the compressor is ON. This alarm will be generated if the circuit high-pressure switch (HPS) opens for more than 2 seconds. The CPM board monitors the HPS switch.

Action to be Taken — The compressor will be stopped. Reset Method — Manual (reset button on switch)

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

loss of condenser water flow

condenser pump failure

compressor operating beyond the operation envelope

faulty high pressure switch or wiring

faulty CPM board

Compressor Overcurrent

Alarm 132-04 — Circuit A (A1.04)

Alarm 133-04 — Circuit B (B1.04)

Criteria for Trip — The alarm criterion is checked when the compressor is ON. This alarm will be generated if the CPM board detects a motor current greater than 93% MTA (must trip amps) and less than 2 times that for more than 1.7 seconds. Action to be Taken — The compressor will be stopped.

Reset Method — Manual

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

Compressor operating beyond the operation envelope.

Incorrect MTA setting.

Compressor Locked Rotor

Alarm 132-05 — Circuit A (A1.05)

Alarm 133-05 — Circuit B (B1.05)

Criteria for Trip — The alarm criterion is checked during start-up when the compressor is ON. This alarm will be gener- ated if the CPM board detects a high motor current compared with the MTA (must trip amps) setting for more than 450 ms.

Action to be Taken — The compressor will be stopped.

Reset Method — Manual

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

compressor mechanical failure

unloader slide valve failure

compressor motor failure

Compressor Phase Loss

Alarm 132-06 — Circuit A L1 (A1.06)

Alarm 133-06 — Circuit B L1 (B1.06)

Alarm 132-07 — Circuit A L2 (A1.07)

Alarm 133-07 — Circuit B L2 (B1.07)

Alarm 132-08 — Circuit A L3 (A1.08)

Alarm 133-08 — Circuit B L3 (B1.08)

Criteria for Trip — The alarm criteria are checked during startup when the compressor is ON. This alarm will be gener- ated if:

The current unbalance on any of the 3 phases is greater than 48% for more than 1 second continuously during start-up.

The current unbalance on any of the 3 phases is greater than 48% for more than 2 seconds continuously during runtime.

Action to be Taken — The compressor will be stopped.

Reset Method — Manual

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

power failure

blown fuse or tripped circuit breaker

power wiring errors or loose terminals

Compressor Low Current

Alarm 132-09 — Circuit A (A1.09)

Alarm 133-09 — Circuit B (B1.09)

Criteria for Trip — The alarm criteria are checked when the compressor is ON. This alarm will be generated if:

The current is less than 15% MTA on all three legs for more than 1 second for Wye-Delta start units.

If the current is less than 15% of MTA on all three legs for more than 1 second for direct start units.

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Carrier 30XW150-400 specifications Service Maintenance Alert Codes, Code Description

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.

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