20
MANUAL - SOLVENT RECYCLERS - URS500, 600, 500EP2, 600EP2
Revision 2019-07
ERROR CONDITION CODES
The computer constantly monitors the unit as it operates.
AN ERROR CONDITION IS INDICATED BY FLASHING “READY” LIGHTS.
NOTE: On later models of the URS500, due to a change in software, the heater light will fl ash dur-
ing normal operation.
For all error conditions except for an error code “22” condition, the Heater light
would be off .
To determine the error type, count the fl ashes of READY (L ) before READY (H) fl ashes, then count the
number of fl ashes for READY (H ). For example, two fl ashes from READY (L) and then one by READY
(H) indicates error code 21. Look up the Error Code on the Chart below. Press the “OFF” button to stop
the error code and press the “ON” button to resume operation after the error condition has been correct-
ed.
If the error persists, call for service.
ERROR
CODE
Flashing LED
Lights
Description
Action Required
READY
(L)
READY
(H)
11
1 TIME
1 TIME
Open circuit - defective tank
thermocouple
Contact Uni-Ram Service
12
1 TIME
2 TIMES
Open circuit - defective condens-
er thermocouple
Contact Uni-Ram Service
13
1 TIME
3 TIMES
Computer malfunction
Replace computer circuit board
21
2 TIMES
1 TIME
Open Heater Circuit - defective
component; heater element,
thermostat, wire conductor, blown
fuse. A defective thermostat or
wire terminal is the most likely
cause.
Contact Uni-Ram Service
22
2 TIMES
2 TIMES
Defective heater triac; Heater is
still “ON”
Disconnect the power supply
immediately. Contact Uni-Ram
Service
23
2 TIMES
3 TIMES
Condenser is overheating or ther-
mostat is faulty.
Clean dirty Condenser following
Service Procedure 1. If Ther-
mostat is faulty contact Uni-ram
Service
24
2 TIMES
4 TIMES
If code 23 condition lasts over 10
minutes, this code will show and
operation is terminated.
1) Clean dirty Condenser. See
Service Procedure 1.
2) Position the unit to provide 6
inches (15cm) all around the unit.
3) Check Cooling Fan or Fan Mo-
tor.
31
3 TIMES
1 TIME
a) Boiling did not occur within 45
minutes. Tank is either empty or
there is excessive debris in liner
bag or tank is dirty.
a) Clean Distillation Tank following
Operating Procedure 7, replace
liner bag, following Operating Pro-
cedure 9.
b) Set point is too low.
b) Increase temperature set point
following Operating Procedure 4
and recycle with virgin solvent
c) Boiling point of solvent is
above maximim set point.
c) Solvent cannot be recycled.
