Aqua-Hot 400 Series Service Manual page 84

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If there is a lack of interior Heat:

Note:

The 120 Volt-AC Electric Heating Element is the

Aqua-Hot's secondary heat source for heating both the

interior and/or the domestic hot water during low heating

demand situations (such as when moderate ambient tem-

peratures exist and/or when there is a low demand for

domestic hot water). If the ambient temperature is ex-

tremely cold the Burner must be utilized.

1. Is the Burner activated?

2. Is the Burner operating Properly?

3. What is the antifreeze concentration, inside of the Aqua-

Hot Boiler Tank?

4. If the LTCO light is not illuminated on the Electronic Con-

troller check the following:

- Is the heater up to operating temperature?

- Is there a hot water faucet/fitting leaking?

- Is there fresh water in the motor home?

5. Was the heating system properly installed, following the

400LP installation manual?

- Are there at least 5 heat exchangers installed in the

interior of the motor home?

- Are there cold air returns installed for every heat

exchanger? Reference Figure B2.

- Are the heat exchangers mounted as close to the hot

air outlet grill as possible? Reference Figure B2.

Figure B-3

Figure B-2

Section #: Title

Appendix B: Cold Weather

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Troubleshooting

Ahe-400-p01