rada V12 - Fault Diagnosis

29
1145094-W2-D
FAULT DIAGNOSIS
Symptom Cause / Rectication
1. Only hot or cold
water from the
Mixer outlet.
a. Inlets reversed (hot supply to cold supply). Refer
to section: ‘Reversed Supplies’.
b. No hot water reaching the Mixer.
c. Check the Filters for any blockage.
d. Installation conditions outside operating
parameters: refer to sections: ‘Specications’
and ‘Commissioning’.
2. Fluctuating or
reduced ow rate.
a. Check the Showerhead, Hose and Filters for any
blockage.
b. Make sure the maintained inlet pressures are
nominally balanced and sufcient, refer to section:
‘Specications’.
c. Make sure the inlet temperature differentials are
sufcient, refer to section: ‘Specications’.
d. Flow Regulator tted incorrectly.
e. Airlock or partial blockage in pipework.
3. No flow from the
Mixer outlet.
a. Check the Showerhead, Hose and Filters for any
blockage.
b. Hot or cold supply failure.
4. Blend temperature
drift.
a. Refer to symptom 2. above.
b. Signicant supply temperature uctuation.
c. Signicant supply pressure uctuation.
d. Faulty Thermostatic Cartridge, renew.
5. Maximum blend
temperature
setting too hot or
too cold.
a. Indicates incorrect maximum temperature setting;
refer to section: ‘Commissioning’.
b. Refer to symptom 4. above.
6. Water leaking from
the Showerhead.
a. Normal for a short period after shut off.
b. Check that the pressures are not in excess of the
specications for product.
c. Cartridge Inlet Seals damaged, renew.
d. Renew the Thermostatic Cartridge.
7. Flow rate too low
or too high.
a. (low) Insufcient supply pressures.
b. (high) Supply pressure too high. Install Flow Reg.
c. Refer to symptom 2. above.