To restore hot water to your shower, start by removing the handle trim escutcheon and checking the plastic rotational limit stop ring, as it may be improperly set to restrict hot flow. If the limit stop is correct, turn off the main water supply and replace the worn-out pressure-balancing mixing cartridge inside the valve body, which often gets stuck or clogged with mineral scale. Callout type="warning" title="Hygiene Warning": Shut off the main water supply before disassembling shower mixing valves. Verification: Turn the water back on and test the shower temperature across all mixing positions.
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