Service manual

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© January 2013 Aqua-Hot
®
600-D01 Series Hydronic Heating System Service Manual - Rev. A
3. Lack of Interior Heat
A. Is the Diesel Burner /Electric Heating Element
working properly?
B. Is the Heater up to operating temperature?
C. Is the Interior Room Thermostat Calling for heat?
D. Is the Zone Circulation Pump operating?
E. Are the Heat Exchanger fans operating?
F. If the Heat Exchanger Fans, and the Zone
Circulation Pumps are operating check for the
following:
i. Stuck Check Valve
ii. Inspect for a Kinked plumbing line.
iii. Is there a Lack of antifreeze in the boiler
tank.
G. Is the Low Temperature Cutoff Thermostat
light, on the electronic controller, out?
H. Is the Electronic Control Board working
properly?
SECTION 10: TROUBLE SHOOTING
Figure 64