Aerco MODULEX EXT 321 User Manual

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
OMM-0087_0F AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 115 of 146
GF-143 Phone: 800-526-0288 07/13/15
E8 Controller Fault Codes 6.1.1
The table below lists the fault codes and fault descriptions associated with the E8 Controller.
Table 6-2: E8 Controller Fault Codes
FAULT CODE FAULT DESCRIPTION
PCB Element Fault
E 1
Intervention of the high limit thermostat (TL).
E 2
Insufficient gas pressure.
E 4
No flame detected during the ignition phase.
E 5
Loss of flame signal during boiler operation.
E 6
Over high water temperature detected by the heating sensor (SR) (>203°F).
E 10
Internal failure of the local control PCB (BMM).
E 11
Flame signal detected before the ignition cycle.
E 12
Local flow sensor failure SR1 first module.
E 14
Failure of the heating return sensor (SRR).
E 15
Difference between the global return heating temperature global sensor and the
heating flow sensor greater than (>) 86 °F (rp +10).
E 16
Boiler body temperature very low: Ice forming risk
E 20
Flame signal detected after burner is OFF.
E 24
Modulating fan speed failure: failed to reach the correct speed within 30 seconds
from starting of burner ignition cycle.
E 26
Modulating fan speed failure: failed to stop within 30 seconds from end of operation
E 28
Common chimney obstruction.
E29
Water inside chimney chamber.
E 30
Alteration of the operating parameters caused by EMC disturbances.
E 32
Mains supply voltage < 108 VAC.
E 40
Low system flow rate.
E 41
Presence of air in the pump (only with SensorLogic)
E 42
Pump blocked (only with SensorLogic)
E 43
Pump wire failure (only with SensorLogic)
System Manager Fault – Sensor Defective (break/short circuit)
E 69
E8: F5 – Flow temperature sensor heating circuit 2.
E 70
E8: F11 – Flow temperature sensor heating circuit 1.
E 71
E8: F1 – Lower storage temperature sensor (Buffer).
E 72
E8: F3 – Higher storage temperature sensor (Buffer).
E 75
E8: F9 – Outer temperature sensor (AF).
E 76
E8: F6 – DHW storage temperature sensor (SPF).
E 78
E8: F8 – Boiler temperature sensor (KF).
E 80
E8: F2 – Room temperature sensor heating circuit 1.
E 83
E8: F15 – Room temperature sensor heating circuit 2.
E 135
E8: F12 – Lower DHW storage temperature sensor MF2.
E 136
E8: F13 – Boiler 2, Manifold 2 MF 3.
E 137
E8: F14 – Manifold 1, Multifunction 4.
E 138
E8: F15 – Room temperature Hc2.

Aerco MODULEX EXT 321 Specifications

General

Brand	Aerco
Model	MODULEX EXT 321
Category	Boiler
Language	English