ECO ULTRA Electric Boiler
Installation, Use and Care Manual
(Revision June 2017)
, Page
39.
TROUBLESHOOTING SYSTEM PROBLEMS
SYMPTOM
POSSIBLE CAUSE
ACTION
Insufficient
domestic hot water
(boiler supplies
space heating and
hot water needs).
System incapable of prioritizing boiler
water for domestic water use.
Install a pump or a valve-zoning panel with the
domestic hot water priority feature. When
demand occurs for domestic hot water, the
zoning panel turns off the space heating system
and shunts all its energy into producing DHW.
Insufficiently hot or
lack of hot water at
the faucet.
The controller UltraSMART temperature
setting too low.
Set temperature controller to a higher setting.
Peak use of hot water is greater than
boiler output capacity or TURBOMAX
®
storage.
Determine peak usage and compare to boiler
recovery capacity & tank volume.
Scale build-up in thermostatic mixing
valve or coil
Clean as described in the Maintenance section.
Faulty UltraSmart control.
Replace temperature controller (aquastat).
No hot water at
faucet.
Boiler not operating.
Press reset button. Check main cut-off switch.
Check fuse. Call boiler service.
Improper controller setting or
calibration.
Set TURBOMAX
®
temperature to a higher
setting. Call boiler service.
Electrical problems (relays, wiring, fuse,
etc.
Check fuses and replace.
Check circuit breaker
and reset. Check power supply.
Scale build-up in thermostatic mixing
valve or coil
If boiler, circulator and TURBOMAX
®
temperature
controls are operating satisfactory, the coil
system may have scale coating. Clean the coil
as described in the Maintenance section.
Water at faucet is
too hot.
Thermostatic mixing valve temperature
setting is too high.
Lower the temperature setting of the mixing
valve.
Controller temperature setting is too
high.
Lower the temperature setting of the aquastat or
lower the boiler temperature.
Improper system plumbing.
Compare plumbing to installation guide.
Improper system wiring.
Compare wiring to installation guide.
Water hammer
noise
Use of hot water at high velocity or high
flow rate.
Install a water hammer absorber. Reduce water
supply pressure. Check water pressure
regulator. Use slower closing valves.
Expansion tank for potable water or
heating loop expansion tank problem.
Expansion tank locked due to high
system pressure.
Check inlet pressure reducing valve setting.
Reset if reduced pressure setting is too high.
Drain expansion tank and refill with air. If
bladder is broken in the expansion tank, replace
expansion tank.
The zone valves have to deal with the
high velocity.
Install valves designed to better handle these
punishing circumstances.
Water noise in
hydronic system.
Air in the hydronic system.
Purge the air from the boiler and the radiator. If
persistent call service.
Differential pressure across the valve is
too high.
Check if the pump or the valves are properly
sized.
