Elwa Hotrun Service Manual page 12

Problem 3
- The hot water flow stops when trying to set the required
temperature to a colder setting.
Cause
- Aerator/restrictor in nozzle of outlet causing too much back
pressure
-incorrectly balanced flow restrictor in the supply line.
-flow from the cold supply line is less than the requirements
for the Hotrun
Remedy
- Remove the restrictors in the tap or aerator fitting. Fit the
appropriate restrictor to the cold supply line for the Hotrun.
Check that other taps or restrictors built into the supply line
are not restricting the flow or reducing the pressure too much.