Jolly Mec J20 Ficha De Montaje, Uso Y Mantenimiento página 92

PROBLEM
High variability of
domestic hot water
temperature
Exits little hot water
Never turn off the heater by removing electricity. Let always complete the shutdown
cycle, otherwise you may damage the structure and have trouble lighting in the
future.
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POSSIBLE CAUSE
1. Water flow is too high
1. Insufficient water pressure
in the network
2. Tap or mixer clogged with
limescale
3. Water group clogged
4. The heat exchanger does
not work
5. Air in: pump cavitation for
the presence of air, the water
does not rotate.
SOLUTION
1. Reduce the flow of water (4/6 liters
per minute)
1. Check the setting of the pressure
reducing valve
2. Install a water demineralizer
3. Check and clean the sanitary kit
4. Replace the plate heat exchanger
5. Bleed the brake system, remove air by
venting the radiators.