Triton T90SR fault codes

6 codes from the Triton manual for the T90SR electric shower. Pick one for what it means, the likely causes and where to start.

Code	What it means
1	Shower inoperable, no water flow
2	Water too hot
4	Water too cool or cold
5	During use, the water flow ceases abruptly
6	Shower performance drops, indicated by a gradual reduction in water flow
7	Pressure relief device has operated (water ejected from the PRD)