46
GI-IM048En-1013
In unusually dirty or dusty conditions, care must be taken to keep water heater burner door in place.
Failure to do so VOIDS
WARRANTY!
Allowing the heater to operate with a dirty combustion chamber will hurt operation. Failure to clean the heat exchanger as needed by
the installation location could result in heater failure, property damage, personal injury, or death. Such product failures ARE NOT
covered under warranty.
PART 9 – SHUTDOWN
A. SHUTDOWN PROCEDURE
If the burner is not operating, disconnect the electrical supply.
If the burner is operating, lower the set point value to 70
o
F (21
o
C) and wait for the burner to shut off.
Continue to wait for the combustion blower to stop, so all latent combustion gases are purged from the
system. This should take a maximum of 40 to 90 seconds.
B. VACATION PROCEDURE
If there is danger of freezing, change the set point to 70
o
F (21
o
C). DO NOT turn off electrical power. If
there is no danger of freezing, follow “Shutdown Procedure”.
C. FAILURE TO OPERATE
Should the burner fail to light, the control will perform two more ignition trials prior to entering a lockout
state. Note that each subsequent ignition trial will not occur immediately. After a failed ignition trial, the
blower must run for approximately ten (10) seconds to purge the system. Therefore, a time period of
approximately 40 to 90 seconds will expire between each ignition trial.
If the burner lights during any one of these three (3) ignition trials, normal operation will resume. If the
burner lights, but goes off in about four (4) seconds, check the polarity of the wiring. See electrical
connection section.
If the burner does not light after the third ignition trial, the control will enter a lockout state. This lockout
state indicates that a problem exists with the water heater, the controls, or the gas supply. Under such
circumstances, a qualified service technician should be contacted immediately to properly service the
water heater and correct the problem. If a technician is not available, depressing the
{S4}
button once
will remove the lockout state so additional trials for ignition can be performed. The unit will try to re-light
once every six (6) minutes.
PART 10 – TROUBLESHOOTING
A. ERROR CODE
An error code may occur during installation of the heater. This condition may lead to a lock out condition of the controller, which will
need to be manually reset by pressing the
{S4}
button. These following will help the installer correct the problem before going into a
lock out condition, which will require a manual reset.
B. HEATER ERROR
1. When an error condition occurs the controller will display an error code on the display module.
2. These error codes and several suggested corrective actions are included in Table 14.
3. In the case of
|E00|
,
|E13|
, and
|E14|
this error, if uncorrected, will go into a fault condition as described in Paragraph C.
C. LOCKOUT
1. When a fault condition occurs the controller will illuminate the red “fault” indication light and display a fault code in the format
(Example:
|F00|
) on the display module.
RESISTANCE TABLE FOR
SUPPLY TEMPERATURE
SENSOR
HIGH/LOW
TEMP.
SENSOR
TEMP.
o
F (
o
C)
RESISTANCE
(ohms)
32 (0)
32,550
41 (5)
25,340
50 (10)
19,870
59 (15)
15,700
68 (20)
12,490
77 (25)
10,000
86 (30)
8,059
95 (35)
6,535
104 (40)
5,330
113 (45)
4,372
122 (50)
3,605
131 (55)
2,989
140 (60)
2,490
149 (65)
2,084
158 (70)
1,753
167 (75)
1,481
176 (80)
1,256
185 (85)
1,070
194 (90)
915
202 (95)
786
212 (100)
667
Table 13
Содержание UGC120S-100
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