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Modulex ext – AERCO Modulex EXT 1530 - 3060 User Manual

Page 107

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MODULEX EXT

1530, 1912, 2295, 2677, 3060 BOILERS

Installation, Operation & Maintenance Manual

Table 6-2: E8 Controller Fault Codes (Continued)

CODE

DESCRIPTION

EFFECT

CORRECTION

RESET

System Manager Fault – Sensor Defective (Break/Short Circuit)

E 69

E8: F5 – Flow temperature

sensor heating circuit 2.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 70

E8: F11 – Flow

temperature sensor

heating circuit 1.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 71

E8: F1 – Lower storage

temperature sensor

(Buffer).

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 72

E8: F3 – Higher storage

temperature sensor

(Buffer).

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 75

E8: F9 – Outer

temperature sensor (AF).

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 76

E8: F6 – DHW storage

temperature sensor (SPF).

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 78

E8: F8 – Boiler

temperature sensor (KF).

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 80

E8: F2 – Room

temperature sensor

heating circuit 1.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 83

E8: F15 – Room

temperature sensor

heating circuit 2.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 135

E8: F12 – Lower DHW

storage temperature

sensor MF2.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 136

E8: F13 – Boiler 2,

Manifold 2 MF 3.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 137

E8: F14 – Manifold 1,

Multifunction 4.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

E 138

E8: F15 – Room

temperature Hc2.

Check continuity. Use

multimeter to measure sensor.

AUTOMATIC

Communication Fault

E 90

E8: BUS addresses 0 and 1.

The BUS codes 0 and 1

cannot be used at the

same time.

Check addresses

E 91

E8: BUS code occupied.

The set BUS code is

already used by another

appliance.

Check addresses

E 99

E8: Internal failure.

Check E8 settings. Possibly

replace E8.

AUTOMATIC

OMM-0095_0E

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913

Page 107 of 138

GF-139

Phone: 800-526-0288

12/01/14