Super Hot BT Series User Manual

BT Series Electric Boilers – Installation, Operating and Maintenance Instructions
12
PROBLEM CAUSE SOLUTION / CHECK
• Main fuses blown (if applicable). • Check main fuses and replace if
blown.
• Internal control fault. • Turn stage LEDs on by adjusting
thermostat to maximum setting and
check for 24V (AC) across stages 1, 2,
and 3.
• Anti-Cycle Cube fault
With corresponding Stage powered,
place a jumper wire across the Anti-
Cycle Cube terminals. If the main
contactor(s) does not close, perform
main contactor check.
If the main contactor(s) are working,
test for voltage across Anti-Cycle Cube
terminals using AC voltmeter. Voltage
should read 24 V (AC) before the delay
time has elapsed and approximately
2.5 V (AC) after delay time has
elapsed. Replace Anti-Cycle Cube if
necessary.
• Main contactor(s) fault. • Check each contactor coil's terminals
for a supplied voltage of 24V (AC). If
present, main contactor(s) are faulty
and must be replaced. If not present,
wiring continuity fault exists – check
and repair.
No heat when called by thermostat and
stage LEDs are lit.
• Element fault.
RISK OF ELECTROCUTION! – MAIN
POWER TO ELEMENTS MUST BE
DISCONNECTED! Next, disconnect
element wires from main contactor(s)
and check for continuity. If no
continuity, replace element. If
continuity, the contactor is defective.
(To confirm contactor defect, check for
continuity across main contactor when
closed.)
Pump runs constantly when there is no
call for heat.
• Internal control fault. • Replace controller.
• Pum
p
ceased or burnt out.
•
Re
p
air or re
p
lace.
• Pump wiring fault. • Check and repair wiring.
• Pump fuse blown. • Check pump fuse and replace if
necessary.
Pump will not run.
• Internal control fault. • Replace controller.
Controller does not operate normally.
• Internal control fault. • Replace controller.
• Relief valve not reseating properly. • Quickly lift and release manual
discharge lever on relief valve to assist
proper reseating. If this fails, replace
pressure relief valve.
Pressure relief valve discharges water.
• Pressure reducing valve set too high. • Reduce setting of pressure reducing
valve.
• Element or sensor threads leaking. • Turn off all electricity to the boiler.
Remove wires from element terminals
and tighten elements (with correct
socket wrench). Turn off water, drain,
remove and apply sealant if necessary.
Water leaking from electric boiler.
• Plumbing connections leaking. • Tighten incoming pipes and pressure
relief valve. Turn off water, drain and
remove and apply sealant if necessary.
(Be sure to turn off electricity before
draining or elements will burn out.)

Super Hot BT Series Specifications

General

Brand	Super Hot
Model	BT Series
Category	Boiler
Language	English