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46
TROUBLE SHOOTING GUIDE (CONT.)
PROBLEM
CAUSE SOLUTION
Aquastat setting too
low
Adjust aquastat to higher
setting. See Section VII
Undersized boiler
with no priority to
domestic hot water
Rewire for priority
Peak use of hot
water is greater than
tank storage
capacity
Determine peak usage and
compare to tank capacity
Insufficient hot
water
Faulty tank aquastat Replace aquastat
Excessive demand Reduce demand or
consider larger tank
Faulty aquastat Replace aquastat
Boiler cycles
more than 5
times per day in
summer Boiler high limit set
too low
Increase boiler high limit
setting
INTERNET VERSION FOR REFERENCE ONLY