Perma Pure Baldwin-Series M225 - Manual (Page 17)

Section J: Troubleshooting 17
K: T
ROUBLESHOOTING
Symptom Check Action
No LED(s) and no fan. AC power input. Ensure that AC power is
connected.
No LED(s) and fan on. AC input fuse on control board.
DC output fuse on control board.
VC on control board. Replace fuse as necessary.
Replace fuse as necessary.
Replace control board.
LED(s) on and no fan. AC input fuse on power supply.
+12vdc TB4 on control board.
Replace fuse as necessary.
Replace power supply.
Impinger remains at
ambient temperature. Peltier current draw. Should be
above 6 amps. Replace Peltier element.
Thermocouple failure LED is
on. Thermocouple connection TB1, 2. Ensure proper connection.
Replace thermocouple.
Impinger frozen and cooler
indicates ambient
temperature. Thermocouple placement in heat
exchanger block. Ensure proper placement.
Replace control board.
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.
Impinger temperature cycles
up and down. Peltier connections on control
board. Ensure a firm connection on
flag connectors on control
board. Ensure system loading
is not exceeding cooler
capacity.
Ready LED does not come on
when impinger is below 7°C. Ready temperature adjustment. Adjust as necessary.
Water carryover in system. Impinger temperature. Should be
below 6°C. Ensure system loading is not
exceeding cooler capacity.
Slip LED does not come on
(alarm relay/water slip option
installed)
.
Water carryover in system.
Water slip sensor connections. Ensure system loading is not
exceeding cooler capacity.
Ensure that all water slip sensor
connections are made.
Clean tip of sensor.
Replace alarm relay/water slip
board.
Pump does not start. Ready
and slip LED(s) are on (alarm
relay/water slip option
installed)
.
Pump electrical connections. Ensure proper connections.
Replace board.