Conair MPA, MPW manual Chiller Will Not Power Up, 6-12, Symptom, Possible cause Solution

CHILLER

WILL NOT

POWER UP

If you apply power to the chiller and the control panel does not light, you have a problem with the main power circuit or the unit’s microprocessor board.

WARNING: Electrical Shock Hazard Disconnect and lockout the main power supply before proceeding.

Symptom Possible cause Solution

Applying power does not turn on the chiller or light the control panel.

Is power reaching the chiller?

❒Verify that the main power supply and any customer- installed electrical discon- nect or emergency stop devices are in the ON posi- tion.

❒Verify correct electrical con- nections between the unit and the control, and between the unit and the power supply. Replace any damaged wires or cables.

Has the unit blown a fuse?

Is the correct voltage reaching the chiller?

Check Fuse 1 on the mother- board and any fuses or breakers associated with customer- installed disconnect devices. Replace or reset as required. Identify the cause of the ground fault and correct it. See CHECK-

ING AND REPLACING FUSES.

Check the electrical require- ments on the unit nameplate. Verify correct main supply voltage to the unit and the sec- ondary voltage supply from the transformer to unit compo- nents. Replace the transformer, if necessary.

The control panel is	Is the unit in Test Mode?	If the Test Mode LED is lit,
lit, but the chiller		you must disable Test Mode on
will not operate		the motherboard before resum-
when RUN is		ing operation. See PERFORMING
pressed.		SYSTEM TESTS in the
		MAINTENANCE section.

6-12 TROUBLESHOOTING microKool Portable Chillers UGH004/0999