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24
FAULT DIAGNOSIS
SYMPTOM
1. Only hot or cold
water from the control
outlet.
2. Fluctuating or reduced
flow rate.
3. No flow rate from the
control outlet.
4. Blend temperature drift.
5. Maximum blend
temperature setting
too hot or too cold.
6. Water leaking from the
shower control fitting.
7. Flow rate too low or
too high.
CAUSE/RECTIFICATION
a. Inlets reversed (hot supply to cold supply).
Refer to section: ‘Reversed Supplies’.
b. No hot water reaching the control.
c. Check the filters for any blockage.
d. Installation conditions outside operating
parameters: refer to sections: ‘Specifications’
and ‘Commissioning’.
a. Check the showerhead, hose and filters for any
blockage.
b. Make sure minimum flow rate is sufficient for
supply conditions.
c. Make sure the maintained inlet pressures are
nominally balanced and sufficient.
d. Make sure the inlet temperature differentials are
sufficient.
e. Check the thermostatic performance.
f. Flow regulator fitted incorrectly.
Refer to Note below.
g. Airlock or partial blockage in pipework.
a. Check the showerhead, hose and filters for any
blockage.
b. Hot or cold supply failure.
a. Refer to symptom 2. above.
b. Hot supply temperature fluctuation.
c. Supply pressures fluctuating.
d. Seal damage or wear. Renew the thermostatic
cartridge.
a. Indicates incorrect maximum temperature
setting; refer to section: ‘Commissioning’.
b. Refer to symptom 4. above.
a. Normal for a short period after shut off.
b. Check that the pressures are not in excess of
the for product.
c. Renew the flow cartridge.
a. (Too low) Insufficient supply pressures.
b. (Too low) Refer to symptom 2. above.
c. (Too high) Supply pressure too high. Install
supplied flow regulator on the outlet.
Refer to Note below.
d. (Too high) Refer to symptom 2. above.
Note! Refer to the Discovery Fittings Installation and User Guide.