Monaco Executive 2005, Owner'S Manual

Page: 192 / 538

Section 4 --- Appliances
The Executive 2005
192
Troubleshooting
If the operating conditions have been met, a heating
source is selected and the Aqua-Hot doesn't appear to be
working there are some quick checks that can be made to
determine the problem. Located in a curb side compart-
ment near the Aqua-Hot unit is the Electronic Controller.
Depending on the floor plan this can be a hard panel to
view straight on and an indication may be overlooked. A
quick glance of the panel can show the fault location. Any
RED light indicates a fault condition. Understanding the
light indications and what they mean are important in
diagnosing the system.
The most critical lamp would be the Heating Status
LED . When this lamp is off no heat is being supplied to
the heat tank. A GREEN indication means one or both of
the heat sources are heating the tank. The heating element
indicator is
GREEN whenever AC Power is being sup-
plied. A RED lamp here indicates an overload or a short
circuit condition in the DC powered electrical circuits. A
service technician should investigate this.
The LOW TANK LEVEL CUT OFF lamp indicates one of two things,
there is a low liquid level in the heat tank or there was a strong impact to the
unit. Whenever this occurs the electronic controller must be manually reset. If
the power has been disconnected for an extended period of time this may generate a
LOW TANK LEVEL CUT OFF indication. Again this would require the electronic controller to be
manually reset. This condition could be related to a LOW BATTERY VOLTAGE FAULT . If 12 Volts
DC drops below 10.5 Volt DC the system will not operate. Once proper operating voltage is restored a
LOW BATTERY VOLTAGE FAULT will reset automatically. Remember; look to see if a LOW
TANK LEVEL CUT OFF was generated.
Another indicator that is probably the most misunderstood indication of all is the LOW TEMPER-
ATURE CUTOFF STATUS . A GREEN indication means heat is available for interior heat. When this
lamp is OFF , a continuous demand for domestic hot water is being used.
Heating the interior of the motorhome requires the comfort control to be turned on and set to fur-
nace. When there is a call for heat the system will activate the circulation pumps. The fan speed selec-
tor switches will have power applied to them and will be audible when turned
ON .
040486b
Using a small
device, this can be
manually reset.
040486c