Water too hot:
Not enough water flowing through the shower, check
Increase in ambient water temperature, check
- whether the sprayhead is blocked. Clean or replace sprayplate in sprayhead.
- increase the flow rate via the temperature control.
- flow rate. Select reduced power setting and re-adjust rate (via temperature control) to give required temperature.
Water too cool or cold:
Too much water flow, check
- flow rate. Reduce rate via the temperature control.
Water pressure below 1.0 bar (14.5 p.s.i.), check
Water temperature cycling hot/cold at intervals:
- the low pressure indicator. If flag is red, continue with remainder of checks.
- If tank fed, re-plumb to mains water supply.
- If mains fed, ensure that mains stopvalve is fully open and that there are no other restrictions in the supply while shower is in use.
- Fit a pump to give minimum pressure of 1 bar (14.5 p.s.i.).
Heater cycling on thermal cut-out, check
- Action required for ‘Water too hot’.
Shower varies from normal temperature to cold in use:
Water temperature has dropped below minimum required.
- Wait until the water pressure resumes to normal. This is sometimes shown by an indicator on the shower unit.
Pressure relief device has operated (water ejected from PRD (pressure relief device) tube):
Blocked sprayhead, check
- whether the blocked sprayhead can be cleaned or needs replacing. Fit a new PRD (pressure relief device).
Twisted/blocked flexible shower hose, check:
- Is there a clear passage through the hose? Replace the hose if necessary and fit a new PRD (pressure relief device).
Frozen heater can, check
- Is there evidence of freezing? Contact a Service Engineer for advice before fitting a new PRD.