Velocity PHANTOM II - Page 75

75110331-01 - 5/20
PHTM II
Installation, Operating & Service Instructions
H06
E06
Flue
High
Limit
Heat exchanger dirty.
• Inspect heat exchanger. Refer to Section 18 Service
and Maintenance for guidance to clean flue side of heat
exchanger.
• Verify vent/air intake pipes are properly installed and
unobstructed.
Boiler over-fired Consult manufacturer.
H07
Return
Temp
Higher
Supply
Flow through boiler reversed.
Verify correct piping and pump orientation. Refer to Figure
10-2 in this manual.
Supply or return sensor defective
or not installed properly.
Check supply and return sensors, correct installation or
replace if required.
No boiler water flow.
Verify system is purged of air and that appropriate valves
are open. Also verify pump is running and set to speed 3
(Figure 15-2).
H08
Return
Sensor
Fault
Shorted or miswired return
temperature sensor.
• Check return sensor wiring, correct wiring if necessary.
• Check return sensor. Refer to Table 19-7. Replace if
necessary.
19 Troubleshooting (continued)
Table 19-5: Active Fault Code and Corrective Actions (continued)
Code Name Possible Causes Corrective Action
H09
E09
Supply
Sensor Fault
Shorted or miswired
supply temperature
sensor.
Check supply sensor wiring, correct wiring if necessary.
Measure resistance of each thermistor and compare. Refer to
Table 19-7. Replace sensor if necessary.
H10
DHW Sensor
Fault
Shorted or miswired DHW
temperature sensor.
• Check DHW sensor wiring, correct wiring if necessary.
• Check DHW sensor. Refer to Table 19-7. Replace if
necessary.
H11
E11
Flue Sensor
Fault
Shorted or miswired flue
temperature sensor.
• Check flue sensor wiring, correct wiring if necessary.
• Refer to Table 19-7 Replace sensor if necessary.
H12
Outdoor Air
Sensor Fault
Shortened or miswired
outdoor air temperature
sensor.
Check outdoor air sensor wiring, correct wiring if necessary.
Check outdoor sensor, Refer to Table 19-8.
H13
Header Or
Recirculation
Sensor Fault
Shorted or miswired
header or recirculation
temperature sensor.
Check header or recirculation sensor wiring, correct wiring if
necessary. Check Header sensor, Refer to Table 19-7.
H14
0-10V/4-
20mA Input
Fault
Shorted or miswired
0-10Vdc / 4-20mAdc
input.
Check 0-10/4-20 input wiring, correct if necessary.
Analog input parameter
setup incorrect.
Check and correct parameter settings (feature not available
with local user display).
E15
APS
Defective
The air pressure switch is
defective, failed to open.
• Remove jumper from air proving switch.
• Check switch, combine with below connection and wiring.
Check switch air tube is connected and unobstructed.
Replace if necessary.
The blower is running
when it should not.
Blower is running before start sequence. This can be caused
by a loss of communication between blower and control
resulting in blower going to max speed. Possible cause is a
defective wiring harness, blower or control.
H16
E16
Low
Combustion
Air Flow
Defective air proving
switch.
Check switch, connection and wiring. Check tube is
connected and unobstructed. Replace if necessary.
Air flow is blocked.
Check vent, air inlet, heat exchanger and burner. Remove
obstruction.
Blower wiring fault. Check power and speed control wiring to blower.
Blower Damaged. Check blower and replace if necessary.