
18
5 Unit varies from
normal temperature
to cold during use.
6 Pressure relief
device has operated
(water ejected from
PRD tube).
5.1 Water pressure has
dropped below minimum
required
6.1 Blocked sprayhead.
5.1.1 Wait until the water pressure resumes to
normal.
6.1.1 Clean or replace sprayhead and then fit
new PRD.
Note: Identify cause of operation before
fitting new PRD unit.
When fitting a new PRD, follow the
commissioning procedure.
FAULT FINDING
Problem
Cause
Action