Fault-Handling Codes - Dometic AH-Passport I/O Compact Operation Manual

AH-Passport I/O Control Operations Manual
F -H
AULT ANDLING
One of the following fault codes displays when a fault is detected:
• ASF – Indicates air sensor failure.
• FIL – Indicates filter needs to be cleaned or replaced.
T D
EMPERATURE
The optional electric heater overlaps with the chilled-water heat by 22° F (12.2° C). The heater turns on when heat is required
and remains on until the chilled-water temperature exceeds the ambient by 22° F (12.2°C) or until the room temperature is
satisfied. During very cold conditions electric heat overlaps the chilled-water heat to supplement heating. Note that parameter
P-19 setting increments are in °F even when the control is set to display °C.
IMPORTANT
The system's air sensor is located in the control's display panel, therefore the display MUST be located on an interior
wall at eye level. It must NOT be located in direct sunlight or inside a cabinet.
If these conditions cannot be met, you must purchase the Optional Remote Air Sensor and install it in the return-air
stream.
Figure 2: Ambient Air to Water Temperature Differentialf
Water Temperature
Differential (°F)
+22°
Heater Off
+15°
Valve Opens
+7°
Valve Closes
0°
Ambient
-7°
Valve Closes
-15°
Valve Opens
L-2232 ENGLISH
C
ODES
IFFERENTIAL OF
Note: Chart uses the Default Values! P-17
Note: Chart uses the Default Value for P-19.
Valve Open
Electric Heater and Valve Open
Valve Hysteresis
Electric Heater
Fan Only
Valve Hysteresis
Ambient Air to Water Temperature Differential
A & W
IR ATER

Fault-Handling Codes

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