502
Thermo G
5 Troubleshooting
Fehler im Wassersystem
Circulating pump failure ( Aquavent 6000S and Aquavent
6000SC only).
•
Error mode activated
In case of malfunctions the motor is switched off via the
error mode
Reactivation of the circulating pump motor
For this purpose disconnect the power supply for > 2 min.
After the power supply is reconnected the motor
performs a soft start.
Heater stops as the connected heat exchanger provides
insufficient heat.
Flow rate too small, because
•
Air in the heater, heat exchanger or in system
sections
•
Taps/valves (flow controllers) throttled,
contaminated, closed.
•
Contaminations in the system, e.g. filters or at bottle
necks
•
Circulating pump delivery rate insufficient(air in
pump housing)
•
insufficient frost protection (antifreeze)
•
System resistance too high (especially high in cold
weather)
•
Circulating pump defective
Heat exchanger provides not enough heat, because
•
Air in the heat exchangers and/or system sections
•
Contaminated heat exchangers
•
Insufficient air entry or air exit
•
Fan: Insufficient delivery rate / incorrect direction of
rotation / resistance too high
•
Antifreeze content too high
Approximate flow rate determination:
Heat flow [kW] according to type plate
Flow rate in in [l/h] =
x 860
Temperature difference
∆
t in [K]
measured on the heater between water inlet and water outlet
(e.g. using contact thermometer)
Table 503 General error symptoms
Error symptom
Possible cause
