Eppendorf New Brunswick -86 °C Freezers G - Manual (Page 34)

HEF® and G -86 °C Freezers — Operating manual
34
8 Troubleshooting
8 Troubleshooting
8.1 General errors
If you are experiencing a problem with your freezer, check the following troubleshooting guides
before contacting your New Brunswick authorized Service technician.
8.2 Error messages
Your electronically-controlled New Brunswick freezer incorporates the unique Systems
Monitoring And Reporting Technology (S.M.A.R.T. Plus™) self-diagnostic software to diagnose
faults in its electronic systems, its probes and/or its refrigeration system.
This table interprets error codes that may appear in the control panel display:
Symptom/
message Cause Remedy
Door will not
open 1. The door handle is locked.
2. The heated vent port is
blocked.
1. Unlock the door handle.
2. Break up the ice in the vent port using
the plunger, (see Heated vent port on
p. 29).
If the door will not open:
 Call New Brunswick Service.
FILTER-CLEAN
LED lights up • Filter is contaminated.  Clean the filter, (see Air intake grille
and filter on p. 29).
If the LED remains lit:
 Call New Brunswick Service.
Symptom/
message Cause Remedy
E-01 • PT100 Probe 1 failure. This
probe, located inside the
freezer cabinet, indicates
cabinet temperature.  Call New Brunswick Service department.
E-02 • Probe 2 failure. This probe
monitors the cascade
condenser.  Call New Brunswick Service department.
E-03 • This probe monitors the
air-cooled condenser.  Call New Brunswick Service department.
E-04 Air-cooled condenser
temperature too high:
1. Filter may be blocked.
2. Ambient temperature may be
too high.
If alarm continues to sound:
• Fan may have failed.
• Water supply not turned on,
insufficient flow, regulating
valve not opening or
defective (water-cooled
version only).
1. Clean filter according to the instructions
(see Air intake grille and filter on p. 29).
2. Cool the room.
 Call New Brunswick Service department.
Hint!
A fan is required to cool the compressors on the water-cooled models.
8
Troubleshooting