Please check the following:
- Filters; they may need cleaning*
- Thermostatic cartridge; it may need maintaining or re-calibrating*
- Hot water supply and pressure; it may be isolated or blocked further down the pipework
- Cold water pressure; it may not be balanced**
**If the cold water pressure is too high you will need to either fit a pump on the hot supply or a pressure-reducing valve on the cold water supply. If you are doing the latter, please ensure the total pressure does not fall below the recommended minimum operating pressure for your product.
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