Perma Pure eCOOL 5000 Series - Manual (Page 21)

Section J: Troubleshooting 21
Problem Check Action(s)
No LCD or LED(s)
and no fan. AC power input.
DC 3A fuse (F1) on control board.
AC 15A fuse on power supply.
Check for +15VDC at P1 & P11 of
control board. Ensure that AC power is connected.
Replace fuse as necessary.
Replace fuse as necessary.
If low reading, remove wires from P1 & P11, measure at
power supply and replace supply if voltage still is low.
Heat exchanger
remains at
Peltier current draw. Should be Replace peltier.
ambient
temperature.
Peltier element current draw.
(Should be above 6 amps.) Replace Peltier element.
Heat exchanger
frozen and cooler
indicates ambient
temperature. Thermocouple placement in heat
exchanger block.
Peltier current draw (>6A) for both
elements on that channel. Ensure proper placement.
Replace Peltier element.
Impinger does not
reach set
temperature, but is
below ready
temperature. System loading.
Calibration and set temperature
adjustment.
Ensure system loading is not exceeding cooler capacity.
Adjust as necessary.
Heat exchanger
temperature cycles
up and down. Peltier element connections on
control board.
Ferrite beads on thermocouples
going into terminal TB1 & TB2 Ensure a firm connection on flag connectors on control
board. Ensure system loading is not exceeding cooler
capacity.
Wrap a Ferrite bead around thermocouple wires.
Water carryover in
system. Heat exchanger temperature.
(Should be below 6°C.) Ensure system loading is not exceeding cooler capacity.
Pump does not
start. LCD(s) are
green. Pump electrical connections. Ensure proper connections.
Replace relay board.
For further service assistance, contact:
Perma Pure LLC
P.O. Box 2105
8 Executive Drive (08755)
Toms River, NJ 08754
Tel: 800-337-3762 (toll free U.S.)
Tel: 732-244-0010
Fax: 732-244-8140
Email: [email protected]
or your local representative