Technical Specification; Electrical Connection; Troubleshooting - Kingspan KHP0041 Installation And Maintenance Manual

Installation Pack
Diagnostic Indicator
Read the following instructions before starting the installation.
This product is a Diagnostic Indicator for Aeromax Plus heat pump models. It indicates the alarm and
power status of the Aeromax Plus unit.
It must be connected to the Aeromax Plus unit for correct operation.

Technical specification

Dimensions
Material
Ambient temperature
Nominal supply voltage
Maximum supply voltage
Cable

Electrical connection

Before connecting any wiring to the diagnostic indicator,
turn the Aeromax Plus unit power off.
Use 3 core, shielded cable to connect the diagnostic
indicator to the Aeromax Plus unit. Refer to the wiring
diagram below. The shield should be grounded only on the
Aeromax Plus terminal strip (terminal no.3).
Diagnostics
Power LED (green) indicates that the Aeromax Plus unit is
powered ON.
Alarm LED (red) indicates when an error occurs. The error
code can be identified from the flashing LED using a fault

Troubleshooting

Problem
Power LED off
Wiring is correct and 12V applied to
the diagnostic indicator but the LEDs
120mm (w) x 80mm (h) x 55mm (d)
Minimum 0.5mm2, 3 core, shielded
code table. Refer to the Aeromax Plus Installation Manual
for the alarm code explanation.
Likely cause
1) Aeromax Plus unit is off.
2) Wires connected incorrectly
3) There is no 12V coming from the
Aeromax Plus unit
1) Diagnostic indicator is damaged
Polycarbonate
-25°C to +70°C
12V DC
20V DC
Solution
1) Check that the Aeromax Plus
power is connected.
2) Switch the Aeromax Plus unit off.
Check the wires.
3) Check the connection on the
Aeromax Plus unit.
1) Replace the diagnostic indicator
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