Overview of Primary Product

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Issue Cause Solution
Leaks 1. Staining
2. Mineral buildup
3. Wet spots
1. Staining can be a sign of a leak in the system; further investigation is
required to follow the source of the leak.
2. Mineral buildup is a sign of a small leak in the system; generally
the deposit is located near the leak. Try tightening the affected
fitting connection. Small mineral buildups in a system is tolerable,
as the deposits take a long time to form. Larger buildups, however,
need attention.
3. Generally, if there is a wet spot, the leak is fairly easy to identify
No flow 1. Closed manifold valves
2. Closed isolation valves
3. Faulty wiring
4. Failed pump
5. Zoning valves (actuators)
6. Air locked
7. Blown fuse
1. If the pump is on and there is no flow to all loops or a specific loop,
ensure the valves at the end of each loop are open.
2. If the pump is on and there is no flow to all loops, ensure the isolation
valve on top of the unit is open.
3. If the pump icon is illuminated on the controller but there is no vibration
or noise from the pump, check that the pump is wired correctly.
4. If the pump icon is illuminated on the controller but there is no
vibration or noise from the pump, check the pump. May have to
replace the pump or pump cartridge.
5. This can only happen if the system is zoned and using actuators.
If the thermostat is calling for heat and the valves are not opening
(after 5 minutes), the actuators are probably wired incorrectly or there
isn’t enough power to open the valves.
If the actuators are open and there still is no flow, check to see if the
supply manifold valve is open.
6. If the pump is on, all loops and isolation valves are open and there
is no flow in the system, there is probably an air lock in the system.
The system must be refilled and purged.
7. I f the thermostat and boiler display are not illuminated, and the breaker
is not tripped, the 24V fuse is probably blown and needs replacing.
Troubleshooting (continued)