Troubleshooting guide

MAGNUM VERSION 8 MANUAL REVISION 3.1

STEP will be moved per second. If the NO FLOW Setpoint is active and set to Lockout the chiller will

lockout on no flow.

AMBIENT OFF (13)

6.1.14.

This state is entered when the ambient temperature falls below Setpoint #24 “LOW AMB OFF” or is above

Setpoint #26 “HIGH AMB OFF”. The system will remain in this state until the ambient temperature if low

rises 5.0°F (2.5°C) above the “LOW AMB OFF” Setpoint value or if high drops 5.0°F (2.5°C) below the

“HIGH AMB OFF” Setpoint value. When the chiller is in this state, the individual compressor states if

active are moved to the CMP IS OFF state through the normal staging function. One capacity STEP will

be moved per second.

UNIT IS UNLOADED (15)

6.1.15.

This state is entered when all of the systems available capacity steps are off. The package is providing no

cooling capacity, as none is required. The system is ready to react to cooling needs.

UNIT IS LOADED (16)

6.1.16.

This state is entered when all of the system’s available capacity steps are on and the package is providing

the maximum amount of cooling capacity.

OFF TMP-ICE MADE (17)

6.1.17.

This state is entered when target temperature has been satisfied.

ECONOMIZER ONLY (18)

6.1.18.

This state is entered when mechanical cooling is off and the economizer has been specified in the MCS-

Configuration setup and it is being used for cooling. Refer to section 7.39 about Economizers.

SWITCHING MODES (19)

6.1.19.

This state is entered when the unit is switching between cooling mode and heating mode. Only heat pump

units or units with electric heat and a Sensor Input selects either the cooling or heating mode will enter this

state. Select this information under the MAG V8 screen.

VaneOpen-SpdHold (19) Only with CENT Software

6.1.20.

This state is entered when the control temperature is above the control zone or in the zone but the

control temperature is rising too fast but waiting for an indication that the compressor vanes are fully

opened and it is before the compressor speed can be increased. The control temperature is above

the control zone.