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Troubleshooting
General remarks If the cooling unit is equipped with one of the following options, the corresponding error
message is displayed on the operating panel of the power source:
- flow controller ... no | H2O (coolant flow error)
- temperature controller... hot | H2O (excess coolant temperature)
Coolant pump fuse Fushing for rotating motor shaft if the coolant pump is
blocked
Troubleshooting Coolant flow too low or no flow
Cause: Coolant level too low
Remedy: Refill coolant
Cause: Throat or foreign substance in the cooling circulation
Remedy: Remove throat or foreign substance
Cause: Cooling pump fuse defective
Remedy: Replace coolant pump fuse
Cause: Cooling pump defective
Remedy: Replace cooling pump
Cause: Cooling pump blocked
Remedy: - Remove coolant pump fuse (7)
- Insert suitable screw driver through motor shaft bushing
- Rotate motor shaft (2)
- Replace coolant pump fuse (7)
Cause: Cooling filter (option) at plug-type connection of water return line clogged
Remedy: Clean cooling filter with clean tap water or replace filter insert
(2)
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