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Heat exchanger cold front half ?

Discussion in 'Plumbing and Central Heating' started by Humbug64, 5 Jul 2020.

  1. Humbug64

    Humbug64

    Joined:
    5 Jul 2020
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    Title was going to be "cold front warm rear" but sounds rude.

    Anyway, I changed heat exchanger on Grant Combi 70 V3 as it was leaking . Fiddly, but all ok without leaks.
    Now it's hot towards the back, cold at front. Flow from hot tap is lukewarm.

    PV Schrader valve leaking too ... I thought pressure drop was due to leaking heat exchanger. Waiting for new one delivered.

    Could there be airlock in heat exchanger? Shall I just wait until I replace PV then see if working?

    Is there anything I need to do after a heat exchanger swap? I've got your PV depressurisation FAQ at the ready.
    Thanks
     
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