Section #: Title
14
©Aqua-Hot®
600D and 675D Use and Care Guide
Troubleshooting
General Information
Should the Aqua-Hot Hydronic Heating System fail to operate,
complete the following checks:
1. Verify that the Aqua-
Hot’s access cover is securely in-
stalled. The Aqua-Hot will not operate if the access cover
is not fully installed.
2.
Ensure that the vehicle’s propane tank contains a suffi-
cient level of fuel. The Aqua-Hot system will not operate if
the fuel level is at or below 1/4 tank.
3. Ensure that the Aqua-Hot boiler tank has an adequate
supply of antifreeze and water heating solution by check-
ing the level at the expansion tank. If the level is low, ref-
erence the maintenance section of this guide for refilling
instructions
If the Aqua-
Hot’s failure to operate is not resolved with the
aforementioned checks, please contact the Aqua-Hot Heating
Systems Technical Support Department at +1 (800) 685-4298
for additional assistance, or visit our website at
www.aquahot.com.
NOTE: An interlock switch prevents the Aqua-Hot from oper-
ating when the cover is not installed and properly secured in
place. Reference page 5, part #14 for interlock switch loca-
tions.
NOTE: The fluid level sensor is located in the Aqua-
Hot’s
expansion tank. If the antifreeze solution in the expansion
tank drops below the level of the fluid sensor, the Aqua-Hot
will not operate.
Expansion Tank Cap
Fluid will reach this
line when Hot
Figure 5
