State Water Heaters SEH-200 Instruction Manual Download Page 22

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trouBlEshootInG ChECklIst

Before calling for service, check the following points to see if 

the cause of trouble can be identified and corrected. Reviewing 

this  checklist  may  eliminate  the  need  of  a  service  call  and 

quickly restore hot water service.

BE  SURE  TO  TURN  OFF  THE  ELECTRICITY  (ELECTRICAL 

DISCONNECT SWITCH) WHEN CHECKING EQUIPMENT.

not EnouGh or no hot watEr

1.  Be  certain  the  electrical  disconnect  switch  serving  the  water 

heater  is  in  the  ON  position.  The  pilot  toggle  switch  on  the 

cabinet should be ON.

 

In  some  areas  water  heater  electrical  service  may  be  limited 

by the power company. If the heater operates on a controlled 

circuit, heater recovery may be affected.

 

The optional manual override switches on the cabinet front may 

be turned off, de-energizing the elements.

2.  Check the fuses.

 

The electrical disconnect switch usually contains fuses.

 

The water heater has fuses located behind the cabinet front door.

3.  If the water was excessively hot, and is now cold, the ECO 

high limit switch may have activated.

 

• 

See the Temperature Regulation section of this manual 

for more information on how to reset the ECO high limit 

controls.

 

Repeated activation of the ECO high limit switch should be 

investigated by a Qualified Service Agent.

4.  The storage capacity and/or recovery rate of the water heater 

may have been exceeded by a large demand for hot water.

 

Large demands require a recovery period to restore water 

temperature.

5.  Cold incoming water temperature will lengthen the time required 

to heat water to the desired temperature.

 

If the heater was installed when incoming water temperature was 

warm, colder water creates the effect of less hot water.

7.  Sediment  or  lime  scale  may  be  affecting  water  heater 

operation.

watEr Is too hot

Refer  to  the TEMPERATURE  REGULATION  section  of  this 

manual.

watEr hEatEr MakEs stranGE sounds

1.  Sediment or lime scale accumulations on the elements causes 

sizzling and hissing noises when the heater is operating.

 

The sounds are normal, however, the tank bottom and elements 

should be cleaned.

2.  Some of the electrical components of the water heater make 

sounds which are normal ie. contactors will “Click” or snap 

as the heater starts and stops.

Summary of Contents for SEH-200

Page 1: ...nstruction Manual place these instructions adjacent to heater and notify owner to keep for future reference COMMERCIAL ELECTRIC WATER HEATER MODELS SEV 150 THRU SEV 10000 SEH 200 THRU SEH 10000 UP TO...

Page 2: ...about the type of hazard what can happen if you do not follow the safety message and how to avoid the risk of injury The California Safe Drinking Water and Toxic Enforcement Act requires the Governor...

Page 3: ...perly may also cause erratic control system operation on ELECTRONIC CONTROL models This water heater must be connected to a grounded metal permanent wiring system or an equipment grounding conductor m...

Page 4: ...It could cause DEATH SERIOUS BODILY INJURY AND OR PROPERTY DAMAGE This manual contains instructions for the installation operation and maintenance of the water heater It also contains warnings throug...

Page 5: ...ter circuits and includes wiring diagrams Control Circuits The water heater is equipped with an electronic control system The system includes a CCB Central Control Board circuit board an immersion tem...

Page 6: ...C1 C5 C4 C3 C2 C1 N GRN GRN BLK BLK X FMR ECO TEMP 120V BLK BLU RED RED RED RED SDI 24V X FMR PRIMARY FUSES X FMR 120V SEC SEC FUSE PILOT SWITCH BLK BLK JUMPER TO DISPLAY LWCO 5 4 3 2 1 FUSES CNTCTR...

Page 7: ...f scalds Some States require settings at specific lower temperatures See Figure 1 which shows the approximate time to burn relationship for normal adult skin MIXING VALVES DANGER Water temperature ove...

Page 8: ...water temperature This is an adjustable user setting in the control system s Temperatures Menu This and all control system menus are accessed through the UIM User Interface Module located on the front...

Page 9: ...irectly above each button on the LCD screen The function will change depending on what menu is currently displayed or what menu item is selected When no text appears on the LCD screen above an Operati...

Page 10: ...used the fault is corrected Power to the water heater must be cycled off and on to reset the control system Note cycling power will not reset the control system if the condition that caused the fault...

Page 11: ...peration total heating cycle time heating cycle count heating element s cycle count and on time along with UIM and CCB software revisions can be viewed in this menu Current Fault Alert Displays any cu...

Page 12: ...equipped with 3 heating elements with an Operating Set Point of 120 F and all Differential settings at 2 F the On Off sequencing of heating elements would be as follows ELEMENT NUMBER DIFFERENTIAL SET...

Page 13: ...eratures is not selected use the Up and Down buttons to select this menu item With the Operating Set Point selected highlighted in black in the Temperatures Menu press the Operational Button underneat...

Page 14: ...ontacts on the external control per all applicable building codes This is a switching circuit only DO NOT apply any external voltage or connect any load IE relay coil to either circuit Element On Disp...

Page 15: ...or not Daily Operating Mode Sun Mon Tue Wed Thu Fri Sat Seven daily sub menus are listed at the bottom of the Economy Mode Setup menu There are 3 Operating Modes in each sub menu Normal Operation All...

Page 16: ...ss the Operational Button underneath CHANGE to activate the adjustment mode for the Setpoint Adjustment value Use the Up Down buttons to change the Setpoint Adjustment to the desired value The Setpoin...

Page 17: ...s to ACCEPT CANCEL when the adjustment mode is activated and how the current setting is outlined rather than highlighted in black Press the Operational Button underneath ACCEPT to enter and confirm th...

Page 18: ...E buttons to enter the Mon sub menu as described above Use the Up Down buttons to select highlight in black the Normal Operation Between setting Press the Operational Button underneath SELECT to chang...

Page 19: ...ternal notification when current tank temperature drops below programmable Alarm SP Fault or Alert Used for external notification whenever a Fault or Alert condition is active Fault Used for notificat...

Page 20: ...menu displays non adjustable operational information The control system records and stores the last 9 Fault and Alert messages in chronological order in this menu The most recent will be at the top o...

Page 21: ...actory Defaults ACTION DISPLAY From the Main Menu use the Up Down buttons to select highlight in black the Restore Factory Defaults menu Press the Operational Button underneath SELECT The Restore Fact...

Page 22: ...it switch may have activated See the Temperature Regulation section of this manual for more information on how to reset the ECO high limit controls Repeated activation of the ECO high limit switch sho...

Page 23: ...NOTES...

Page 24: ...500 Tennessee Waltz Parkway Ashland City TN 37015 Phone 800 365 0024 Parts 800 433 2545 Fax 800 644 9306 www statewaterheaters com Copyright 2010 A O Smith Corporation All rights reserved...

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