Troubleshooting in

THERMAL SOLAR PANELS

PHENOMENON OBSERVED

POSSIBLE CAUSES

There is no pressure in the pipe

of domestic hot water arriving to

or coming from the accumulator

Pipe and/or accumulator

SOLUTION

The hot water accumulator has not heated up yet

The primary circuit is not sufficiently filled

Presence of limestone deposits

inside the accumulator

The primary circuit is not sufficiently filled

Hot water thermostatic mixer tap

is incorrectly regulated

Abundant sun exposure and little use of

hot water heated water contained in the

accumulator up excessively

Overpressure in the primary circuit due to the

prolonged inactivity of the system in high summer

Overpressure in the primary circuit due

to abundant sun exposure and accumulator

totally empty of water

Leak, mechanical breakage or

damage due to frost

Mechanical breakage or damage due to frost

No water runs from the hot water tap

After putting into service, only cold water

runs from the hot water tap.

After long operation and despite the sun

being strong only warm water runs from

the hot water tap

Very hot water runs from the hot water

tap after prolonged absence

The safety valve has opened

Presence of water or heat-carrying fluid

leak in the system

One of the hot water collectors or the

water boiler is damaged

Open the relevant stop taps

Defrost pipes or the accumulator using abundant hot water

and make sure water has not caused any damage. In case of frost,

drain residual water completely to prevent ice from causing damage.

Wait

Integrate with ALIGeL HC20 BIo o ALIGeL HC30 BIo

using SOLARFLUx pump

Clean the accumulator and remove scales using ZINCONEx

or ZINCONEx-LQ and DISINEx 18 K pump

Check tightness of the primary circuit couplings using a UV lamp

and if necessary repair them. Check the safety valve, if necessary replace it.

Fill the primary circuit in using ALIGEL HC20 BIO o ALIGEL HC30 BIO

Position the hot water thermostatic mixer tap to 60 °C

Add cold water or have a hot water thermostatic mixer tap assembled

In the future, in case of prolonged absence or if the accumulator

has been emptied, cover the collector

If necessary fill the primary circuit in with

ALIGEL HC20 BIO o ALIGEL HC30 BIO, ALIGEL

Put the system out of service.

Detect the leak and repair it using FASTOP SOLAR

Put the system out of service. Replace the damaged element and fill

the system in with ALIGEL HC20 BIO o ALIGEL HC30 BIO.

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