PEERLESS PureFire PF-110, Installation, Operation & Maintenance Manual

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61
TROUBLESHOOTING
“A”
CODE
Error Display
Internal
No.
Error Description Corrective Action
A04
INTERNAL ERROR GAS
VALVE RELAY
5
Gas Valve Relay
Problems.
See Note**
A05
INTERNAL ERROR
SAFETY RELAY
6 Safety Relay Problems. See Note**
A09
INTERNAL SOFTWARE
ERR RAM ERROR
9
Internal Software Error. See Note**
A10
COMMUNICATION ERROR
E2PROM ERROR
12
No Communication with
E2prom.
See Note**
A12
SOFTWARE OUT OF
DATE E2PROM OUT OF
DATE
10
Contents of e2prom is
not up-to-date.
See Note**
A13 INTERNAL ERROR 13 Internal Software Error See Note**
A14 INTERNAL ERROR
14
Internal Software Error See Note**
A15 INTERNAL ERROR
16
Internal Software Error See Note**
A16 INTERNAL ERROR
22
Internal Software Error See Note**
A18 INTERNAL ERROR
19
Internal Software Error See Note**
A19
FALSE FLAME DETECTED
AFTER SHUTDOWN
20
Flame signal detected 10
sec. after closing the gas
valve. 1. Check flame sensor to be sure there is no short to ground.
2. Check igniter to be sure there is not short to ground.
3. This could also indicate that the gas valve doesn’t close completely.
A20
FALSE FLAME DETECTED
BEFORE IGNITION
21
Flame signal detected
before gas valve
opened.
4. Check flame sensor to be sure there is no short to ground. Check
igniter to be sure there is not short to ground.
A23 FLOW_SW_NOT_OPEN
25
CH flow switch not
working.
1. Check for electrical continuity between wires
connected to terminals 9 & 10 from field supplied flow switch.
2. If there is continuity when the circulator is off, there is a system
piping or circulator control problem.
A24 FLOW_SW_NOT_CLOSED
26
CH flow switch not
working.
1. Check for electrical continuity between wires connected to
terminals 9 & 10 from the field supplied flow switch.
2. If there is no continuity, check to be sure the circulator is working.
3. If the circulator is working correctly, check the flow switch.
A32 FAN NOT RUNNING 23 Internal Software Error.
A33 FAN SPEED ERROR 8
Fan speed detected is
more than 300 rpm dif-
ferent from targeted
value for more than 60
seconds.
1. Does the fan run at full speed after resetting the control?
• Check connections in the 4-wire connection to the blower.
• If the connections are correct, there may be a problem with the
harness or the main control board.
2. Does the fan run normally after resetting the control?
• Under System Test in the Installer Menu on the display, choose
“Low Power”. If the boiler locks out when targeting low power,
check the voltage to the fan.
• If the voltage is within specification, replace the blower.
3. Does the fan not run after pressing reset?
• Check for signs of moisture around the fan motor. Check for
evidence of recirculating flue gas (corrosion inside the cabinet).
• DO NOT replace the blower without determining the cause of
the failure. Otherwise, the failure may reoccur.
A50
RETURN HIGHER THAN
SUPPLY
11
Boiler return water tem-
perature higher than
supply for more than 5
ignition attempts.
1. Check system piping. Assure that the water is entering the return
connection and exiting the supply connection.
2. Compare the supply thermistor reading to the
temperature gauge, if they don’t agree, replace the supply
thermistor.
Table 10.2 (cont’d): Control Board Locking Error Codes (manual reset):
** If persistent locking errors, A04 through A18, occur, systematically disconnect all wires that were not supplied by the factory with the exception
of the power supply (CH T’stat, DHW T’stat, LWCO and Pumps). If the error code goes away, determine if there may be feedback from one of
the circuits. If the Error occurs with all of these disconnected, there is likely a problem with the control board.