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240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Ver. 1.00
CONFIDENTIAL
10-14. Hi-limit switch
Before pressing the button on the hi-limit switch.
After the hi-limit switch was working, refer to the following
procedure.
1.
T
urn off the controller
.
2.
Open a hot water tap and lower the temperature of the heat exchanger.
3.
Press the button on the hi-limit switch.