ThermiStar L .. SP 01/03/10
9. Troubleshooting
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9
Troubleshooting
9.1 Troubleshooting
Faults and their removal
If while the heat pump is running the heat discharge is suddenly
interrupted (e.g. by a stopped heating circulation pump or closed
valves), the high pressure safety limiter in the heat pump may be
triggered (due to the thermal inertia of the system). The heat pump
is thereby shut off and an automatic restart is prevented for safety
reasons.
NOTE!
Reduced service life of the high pressure safety
limiter as well as the condenser due to excessive
wear.
Therefore:
-
Find out why the high pressure safety limiter was
triggered and remove the cause.
Another possible reason for triggering this high pressure safety
limiter may also be related to the local conditions of the heat pump's
installation site which may necessitate the installation of an oil sump
heater (strip heater on the condenser) or a "pump-down function".
Approach in case of malfunctions
If electrical errors (e.g. defective sensors) can be ruled out, begin
with checking the circulation pump and valves of the heating system
and heat source.
NOTE!
If all errors can be ruled out on the external system,
the cooling cycle of the heat pump must be checked
by an authorized technician.
Содержание 98.30000-6324
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