Kohler Discovery manual Fault Diagnosis, Symptom, Cause/Rectification, and ‘Commissioning’

FAULT DIAGNOSIS

	SYMPTOM		CAUSE/RECTIFICATION
1. Only hot or cold		a.	Inlets reversed (hot supply to cold supply).
	water from the control		Refer to section: ‘Reversed Supplies’.
	outlet.	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’.
2.	Fluctuating or reduced	a.	Check the showerhead, hose and filters for any
	flow rate.		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.
3. No flow rate from the		a.	Check the showerhead, hose and filters for any
	control outlet.		blockage.
		b.	Hot or cold supply failure.
4.	Blend temperature drift.	a.	Refer to symptom 2. above.
		b.	Hot supply temperature fluctuation.
		c.	Supply pressures fluctuating.
		d.	Seal damage or wear. Renew the thermostatic
			cartridge.
5.	Maximum blend	a.	Indicates incorrect maximum temperature
	temperature setting		setting; refer to section: ‘Commissioning’.
	too hot or too cold.	b.	Refer to symptom 4. above.
6. Water leaking from the		a.	Normal for a short period after shut off.
	shower control fitting.	b.	Check that the pressures are not in excess of
			the for product.
		c.	Renew the flow cartridge.
7. Flow rate too low or		a.	(Too low) Insufficient supply pressures.
	too high.	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.

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