AHRI GAS-FIRED COMMERCIAL WATER HEATER, Руководство по установке и эксплуатации

Страница: 52 / 56

52
Error
Code
Definition of Code Cause of Problem and Actions Taken to Correct
6
Flame Sensed Out of
Normal Sequence
(Before Opening Gas
Valve or After Closing
Gas Valve)
Check to make sure gas valve has closed. No voltage should be present at
the gas valve before or after ignition cycle. Make sure wire positions on the
wire harness are correct. If gas valve is stuck open, replace.
23
Flame Detected
Before Ignition
Check to make sure gas valve has closed. No voltage should be present at
the gas valve before the ignition cycle. Make sure wire positions on the wire
harness are correct. If gas valve is stuck open, replace.
24
Flame Detected After
Heating Cycle
Completes Check to make sure gas valve has closed. No voltage should be present at
the gas valve before the ignition cycle. Make sure wire positions on the wire
harness are correct. If gas valve is stuck open, replace.
31
Upper Sensor
Readings Faulty Resistance of upper sensor out of operating range. Check continuity of wire
harness to upper sensor, and if O.K., replace upper sensor.
32
Lower Sensor
Readings Faulty Resistance of lower sensor out of operating range. Check continuity of wire
harness to lower sensor, and if O.K., replace lower sensor.
57
Flame Rod Shorted
to Ground
Pilot flame sensor rod is shorted to ground. Check to see if flame sensor
wire has bare spots touching metal parts of if flame sensor rod is touching
the pilot shield or other metal parts. Replace pilot if flame sense wire is
damaged or flame rod is bent.
58
AC Line Frequency
Error – Signal Too
Noisy or Frequency
Incorrect
Check line voltage frequency to the water heater. Determine if there are
wide fluctuations. Call an electrician if the problem persists. The water
heater should be on a separate line.
59
Line Voltage Too Low
or High
Check line voltage to the water heater. Determine cause of low or high
voltage. Call an electrician or your utility. The water heater should be on a
separate line.
61
DC Output Voltage
Unstable
Check line voltage to the water heater for erratic readings. Also check
wiring to make sure there are no shorts. If power supply and wiring is O.K.,
replace control board.
62
Maximum Number of
Retries Detected
Pilot is either not lighting or not staying lit during the ignition cycle. Check
inlet gas pressure for minimum pressure on rating label. Is pilot electrode
sparking? Check gas valve wire harness for broken wires or shorts. If 24
volts is present between PV and PV/MV terminals at the gas valve, replace
gas valve. Check for voltage output to the yellow and red gas valve wires on
the control board pins. If during the ignition trial period, there is no voltage
present at the control board pin terminal for the red and yellow wires leading
to the gas valve, then replace the control board. Replace pilot if wires are
damaged or electrode is damaged.
63
Maximum Number of
Ignition Recycles
Detected
Pilot flame is lost during run cycle, then reestablished on ignition cycle.
Check inlet gas pressure. Is gas pressure dropping below the minimum
operating pressure on the rating label after the main gas valve opens? Is
the gas pipe size to the water heater adequate? Check the pilot shield
position and condition of the burners. Clean or replace as needed. Check
the pilot flame and observe the microamp output on the run cycle. Check
the pilot tubing to the pilot and replace if crimped or damaged. Replace pilot
if wires, flame sensor, or electrode is damaged.
64 Electronics Failure Replace control board.
65
High Water
Temperature (Over
200
˚ F)
Water temperature in tank has exceeded 200 ˚ F. Check lower sensor. Make
sure sensor is fully inserted into the well (clip on sensor wire secures sensor
in place). Check lower and upper (where used) sensor readings. If not
within specifications, replace sensor. If sensor and wire harnesses check
O.K., replace control board.