Carrier 30XW150-400 specifications Service Maintenance Alert Codes, Action to be Taken - None

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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