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  1. J

    w/bosch 400 rsf over heating

    hello people i have a highflow 400 rsf (non electectronic) that cuts out on dhw.Safety Temperature Limiter has to reset in order for it to work again, but cuts out gain a few hours. i have replaced the pump, water - water heat exchanger, Safety Temperature Limiter,HW Thermostat, i have...
  2. J

    potterton puma 80 (flame cuts out when cold water turned on)

    Hello I have a potterton puma 80. when i turn the hot water in the basin on the boiler fires up and keeps running, but as soon as i turn the cold water on in the basin or bath the boiler cuts out. has anyone had a problem like this? Jose
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