38
- Installation & Servicing
FAULT FINDING
FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING
47
FAULT FINDING CONTD
Note.
In the case that one of the connectors "X 11" to "X17" on the MBD, controlling the fans is not connected, the fan runs
at max speed and the module will not switch on.
Error Code Description Alarm
E18 Global Flow Temperature > 95ºCNo
E19 Global Return Temperature > 95ºCNo
E92 All modules in error Yes
Possible Causes and Solutions
The NTC and/or wiring of the global temperature involved is defective.
Insufficient or even no circulation of water due to the obstruction of the sections or pump failure.
ERROR CODES RELATED TO GLOBAL TEMPERATURES
Error Code Description Alarm
E26 The Min. Gas Pressure Switch is open No
E90 The module AM-4 has not been detected No
E91 The module AM-5 has not been detected (or number of AM-5 modules is wrong) No
Possible Causes and Solutions
For E26 check the dynamic inlet gas pressure: it MUST be a minimum of 15 mbar.
For E90 check the dipswitches position (see Frame 21)
For E91 check the dipswitches position (see Frame 22)
ERROR CODES RELATED TO GAS PRESSURE, AM-4 AND AM-5
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