Velocity PHTM2080H, Installation, Operating And Service Instructions

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83 110332-04 - 2/23
PHTM II
Installation, Operating & Service Instructions
18
Troubleshooting
(continued)
Table 18-6: Detailed Fault Code (found on"
c
" and "
b
" menus)
Code
Detailed
Code
Type Condition
H01
H01
.
0 Warning Anti-short cycle boiler start delay, while thermostat demand present, boiler has
cycled off and restart is delayed.
H01
.
1 Warning Urgent calibration cooling delay. Boiler start delay, urgent calibration is present,
waiting for supply temperature to decrease.
H01 . 2
Hold Flow switch is closed, boiler start is delayed waiting for flow switch to open.
H02 H02
.
0 Hold A safety limit is open and preventing boiler from starting.
H04
E04
H04
.
0 Hold
Supply Temperature is higher than 200°F (93°C) or (when used) preferred outlet/
flow high limit (Manual Reset Lockout Limit) (minus 10°).
E04 . 1
Lockout Supply Temperature is higher than 210°F (99°C) or (when used) preferred outlet/
flow high limit (Manual Reset Lockout Limit).
H05
E05
H05 . 0
Hold Temperature rise between supply and return greater than 63°F (17°C).
H05 . 1
Hold
Boiler water flow switch does not detect water flow. Switch contact is "open" when it
should be "closed".
E05
.
2 Lockout Boiler water flow switch does not detect water flow. Switch contact is "open" when it
should be "closed" after 5 retries.
E05
.
3 Lockout Temperature rise between supply and return is greater than 63°F (17°C).
E05 . 4 Lockout Boiler water flow switch contact is "closed" when it should be "open".
H06
E06
H06
.
0 Hold
Flue gas sensor detected temperatures in excess of 194°F (90°C) or when used
preferred Stack/Flue Limit (minus 10°).
E06 . 1
Lockout Flue gas sensor detected temperatures in excess of 204°F (96°C) or when used
preferred Stack/Flue Limit.
H07
E07
H07 . 1
Hold Return temperature higher than supply temperature.
E07 . 0
Lockout Return temperature higher than supply temperature.
H08 H08 . 0
Hold Shorted opened or miswired return temperature sensor.
H09
E09
H09 . 0
Hold Shorted, opened or miswired supply temperature sensor.
E09
.
1 Lockout Shorted, opened or miswired supply temperature sensor longer than 10 seconds.
E09
.
2 Lockout Temperature difference between dual elements too high.
H11
E11
H11
.
0 Hold Shorted, opened or miswired Flue temperature sensor.
E11
.
1 Lockout Shorted, opened or miswired Flue temperature sensor longer than 10 seconds.
H12 H12 . 0 Warning Shorted, opened or miswired outdoor air temperature sensor.
H13 H13 . 0
Hold Shorted opened or miswired Header temperature sensor.
H14
H14 . 0
Hold 0-10VDC Input is out of range.
H14 . 1
Hold 4-20mAdc Input is out of range.
H14 . 2
Hold Analog Input parameter setup incorrect.
E15 E15 . 0
Lockout The Air Pressure Switch detects airflow while fan is not running. Switch contact is
"closed" when it should be "open".
H16
E16
E16 . 0
Lockout Air proving switch does not detect air flow for more than 51 seconds.
E16 . 1
Lockout Fan standstill not reached.
H16 . 2
Hold Fan speed is not proven during running mode.
E16
.
3 Lockout Fan speed is not proven during prepurge or post purge.