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© 2015 OJ Electronics A/S
Output relay for main pump, cooling, high-
limit valve or other attached device not
activated
Incorrect connection to device (X-OuTPuT relay has volt-free contacts, see master wiring diagram for correct
connection).
Bad electrical connection between attached device and terminals.
Install mode not activated, set dIP-1 to OFF and then back to the ON position to commence install mode for
2 hours.
The attached device may be faulty.
dip switches may be incorrectly set, see “Free Relay Function (X-OuTPuT)” in the Installation Manual for
details.
Boiler does not fire
(LED lit)
Incorrect connection to boiler (X-OuTPuT relay has volt-free contacts, see master wiring diagram for
correct connection).
Bad electrical connection between boiler and terminals.
during install mode the boiler relay will not operate.
The attached boiler may be faulty.
(LED not lit)
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Timing sequence delay is activated.
FS master only - mixing valve not open more than 20%.
No heat demand from room sensors.
Master is in cooling mode.
Mixing valve does not operate correctly
(when in install mode)
Incorrect connection, see master wiring diagram for correct connection.
Incorrect valve/actuator assembly.
The actuator is faulty.
Check what happens if the sensor and/or outdoor module are removed.
(valve cycles between open and closed
in normal operating mode)
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Valve may be oversized.
Supply water sensor may be subject to heat migration.
upstream water temperature is excessively high.
(These problems can be corrected by changing PI settings – please refer to the main installation manual).
Incorrectly installed, see the installation instructions supplied with the actuator.
