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110332-02 - 6/22
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.
