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Typical Malfunction Thresholds

Potentiometer detection 

TYPICAL MALFUNCTION THRESHOLDS

Either of the following conditions is met: (a) or(b)
(a) Potentiometer output difference [D divided by C]
C: Difference between previous and current target
D: Difference between potentiometer output and previous target
10% or more
(b) Potentiometer output deviation from target 0.1 V or more

Tank outlet coolant temperature detection 

TYPICAL MALFUNCTION THRESHOLDS

Either of the following conditions is met: (a) or (b)
(a) Heat storage tank outlet coolant temperature when recover starts 60°C (140°F) or more
(b) Heat storage tank outlet coolant temperature difference during water valve check Less than 3°C (5.4°F)