When troubleshooting a three zone hydronic heating system,the technician observes that two zones are operating correctly while the third zone is not getting warm during a call for heat,what is the most likely problem?

Question

Quizplus · Accepted Answer

The most likely problem when only one zone in a multiple zone hydronic heating system is not getting warm during a call for heat is a defective zone valve. This can be tested by checking the voltage at the zone valve during a call for heat to see if it is receiving power. If it is receiving power and still not opening, then the zone valve is likely defective and needs to be replaced.

When Troubleshooting a Three Zone Hydronic Heating System,the Technician Observes