Kioto Solar FWS 20 E - No Hot Water; Kein Zirkulationsbetrieb; No;Wrong Switching Times

InstallatIon and InstructIon manual FRESH watER Station
13
E & OE, subject to change without notice.
Cause Relief
Buffer tank not hot enough • Increase temperature in buffer tank
Charge pump doesn’t
convey buffer water
• Check water level in buffer tank (extraction of buffer water for the
Fresh Water Station happens at the highest point of the tank)
• De-aerate buffer circuit and check system pressure
• Check, if all shutoffs (buffer and tap water side) are open. If not, open them
Check hydraulic resistance between buffer tank and Fresh Water Station
and reduce it, if necessary
• Check at initiation if the Fresh Water Station
is correctly connected to the buffer circuit and drinking water system
• Check Flow-Switch and electricity box
• Replace broken charge pump
Flow-Switch sends no signal
to charge pump
• Remove Flow-Switch
• Clean Flow-Switch housing
• Reintegrate Flow-Switch
• If the Flow-Switch still sends no signal to the charge pump, replace Flow-Switch
Electricity box broken • Check if power cord is connected to the electricity network
• Close shutoff valves
• Remove Flow-Switch
• Check the outlet L of the charge pump with a voltage detector for voltage.
Ifthereisnovoltagewhenoperatngtheowswith,changethePCB
Wrong hot tapping water temperature • Tap hot water. Turn the thermostatic head to max. temperature for a short time
• Hotwaterisprepared:setthenthermostaticheadtothedesiredtemperature
• Nohotwaterisprepared:
Check buffer water temperature
Check the heat exchanger for thermal furring.
Thermal furring of plate heat • Clean plate heat exchanger
No hot water
Cause Relief
Circulation pump doesn’t convey. • Check if shutoff at circulation connection is open
• Check electric connections
Circulation pump is not set properly. To check that, set the operation mode
selectorto“ON”:
If the pump conveys water, check settings on the pump
and eventually switch to “Timer Mode”
If no water is conveyed, replace circulation pump
Hydraulic resistance of tap water
piping is too big for circulation pump
• Check dimensioning of tap water piping
No circulation
Cause Relief
Circulation unit was switched to
time-independent circulation
• Reconnect wiring of circulation pump for time-dependent circulation
Timer clock misaligned • Set timer clock and switching times
No/wrong switching times